View Photo Gallery: Season 14 of “Dancing with the Stars.”

In a controversy-free episode, the most dramatic moment of Monday’s two-hour “Dancing With the Stars” performance night came at the end of the show. As the camera panned through the contestants who had just peformed, “Little House on the Prairie” actress Melissa Gilbert and her pro dance partner, Maks Chmerkovskiy, were absent.

“If you’re wondering why Melissa and Maks are not here, she injured herself,” show host Tom Bergeron explained in the remaining seconds of the show. “And as a precaution, she’s gone to the hospital to get checked out.”

Earlier, the judges had praised Gilbert for her best dance of the season — a paso doble that showed her “inner bad girl.” Maks slipped on the floor at one point during the performance, though Gilbert didn’t seem to visibly stumble, and she didn’t say anything during the judges’ remarks. But according to the Hollywood Reporter, pro dancer Karina Smirnoff told reporters backstage that Gilbert said she hit her head on the floor while dancing and felt dizzy and light-headed.

Bergeron promised to update viewers on Gilbert’s status on the Tuesday night results show.

(UPDATE: Gilbert tweeted that she’s fine. “I‘m alright. Mild concussion and whiplash,” she wrote on Twitter early Tuesday morning. “Very soon I will be safely home resting and being taken care of.”)

Meanwhile, KISS kicked off the show, a.k.a. Rock Week, with an energetic and slightly frightening performance — and Tom Bergeron said they’ll be back on results night, too. Here’s a rundown of the rest of the performances:

‘The View’ talk show co-host Sherri Shepherd and Val Chmerkovskiy

Dance: Tango

Sherri is tired of crying after last week’s sob fest, and she’s ready to rock. Val is all about channeling hardcore energy into the tango, which is about love and hate — a typical relationship between a man and a woman, he explains. To illustrate the point, Val is especially tough on Sherri this week. In between, he checks out his own abs in the mirror.

Sherri puts on her Moody Face to capture the intensity of the tango, and starts the dance on top of the judge table. “Be still my beating heart,” Len says, not sarcastically: He’s pleased with the angry performance. Bruno likes when Sherri tones down the bubbly act, though he believes she needs to work on her footwork. Carrie Ann calls the dance “good” but thinks Sherri was simply expressionless rather than intense, and she misses Sherri’s over-the-top personality.

In the Celebriquarium, Brooke Burke Charvet suggests that Sherri’s lack of energy is from commuting cross-country, from New York-based “The View” to the “DWTS” Los Angeles studios. “I’m a mother, I multitask, it’s nothing difficult for a mom,” Sherri throws back at her. Scores: 7, 7, 7 for a total of 21 points.

Opera singer Katherine Jenkins and Mark Ballas

Dance: Paso Doble

Mark thinks Katherine needs to get in the fighting spirit for the paso doble, or at least stop giggling as much. He takes this very literally and sets Katherine up in a boxing ring to practice her fighting skills. She still giggles a lot, but the fighting expert confirms she’s found her inner warrior.

Katherine also looks supremely angry as she races through the dance, not as confident as she has in past weeks. Bruno says Katherine looked like she was “unleashing a whirlwind of fury,” but she didn’t hold onto the cleanliness or precision. Cue boos from the audience. Carrie Ann agrees that Katherine was intense, but that the intensity threw her off her footing. “It was still pretty!” protests Carrie Ann over more boos. Len, typically, is also disappointed and thinks the artistry disappeared when Katherine attacked the dance. Are we sensing a theme already tonight? Scores: 8, 8, 8 for a total of 24 points.

Actor Jaleel White & Kym Johnson

Dance: Tango

After breaking down last week, Jaleel is done reminiscing about his Urkel days. He also proclaims to have no idea who this “Mick Jagger” character might be when Kym brings up the singer. Jaleel adds he has no knowledge of rock music, so that KISS performance was probably pretty terrifying for him. A lot of the dance rehearsal this week requires Kym to throw Jaleel down on the floor repeatedly, so we look forward to seeing how that goes while they dance to “(I Can’t Get No) Satisfaction” by this obscure band called the Rolling Stones (?).

Jaleel appears to have more fun than usual, and he does a flawless job of falling to the ground and spinning. Carrie Ann loves it. Len is thrilled that Jaleel was the one spinning on the floor, but he thought the dance needed “more attack, a little bit more aggression.” Jaleel looks taken aback at the criticism. “Wow — that’s why I kicked!” he exclaims. The audience boos. “I’m trying to help the guy,” Len protests, explaining Jaleel needs more “panther-like” moves on the dance floor. Bruno concurs and calls it “underpowered,” and Jaleel does not look pleased. Scores: 8, 7, 7 for a total of 22 points.

Actress Melissa Gilbert and Maksim Chmerkovskiy

Dance: Paso doble

Maks tells Melissa that the paso doble requires a lot of passion and power. So, “basically everything you’re not” he tells her bluntly. Melissa isn’t fazed and is convinced that she can unleash her inner bad girl. Maks yells at Melissa during the rehearsal as he tells her to get angry, and we’ll give her the benefit of the doubt that he’s just trying to get her into character, because she needs to “kill” him at the end of the dance.

The dance starts as Maks drags Melissa around on the floor, but she gains power throughout the routine. She tosses him aside at the end, though it looks more like a friendly shove as he falls over.

Still, Len likes it, even though he thought she would be unsteady at first — but she gained confidence. In fact, Maks was the one who slipped at one point. Bruno says she messed up the ending to the dance, though Maks quickly jumps in and said the misstep was his fault. Carrie Ann thinks it was Melissa’s best performance yet, though she needs to find her power balance with Maks.

Celebriquarium Brooke asks whose idea it was to “kill” Maks at the end. “Was that some kind of fantasy of yours and maybe some of his past partners?” Brooke asks. We’re sure Hope Solo would approve. Scores: 7, 8, 7 for a total of 22 points.

Green Bay Packers wide receiver Donald Driver and Peta Murgatroyd

Dance: Paso doble

Donald is feeling pretty confident because so many “DWTS” athletes have been great at the paso doble. Peta decides that Donald will be dancing shirtless, but with a cape. However, with a lack of cape in rehearsal, he has to put on Peta’s sweater, which makes him look like a little old lady and sort of destroys his “tough” illusion.

He quickly sheds his shirt during the dance and drags Peta around on the floor in circles to kick things off, storming around on stage with the most intensity of anyone so far this night. “Great guns, Donald!” roars Bruno, who is a fan of the performance. “You have power, drive and a sense of humor,” he raves. Carrie Ann goes with “psychedelic, sexy, hot and raunchy.” Len also loves it and calls it his best dance of the season. Scores: 9, 9, 9 for a total of 27 points.

Singer Gladys Knight and Tristan MacManus

Dance: Tango

Gladys is determined to shed her “goody two shoes” image this week, calling herself the grandma of rock and roll. In fact, she adds, she was inducted into the Rock and Roll Hall of Fame, so she feels like she has to be successful. “It’s time to show the world that Gladys is here to rock you,” she declares.

“Bohemian Rhapsody” is a very strange number for the tango, and Gladys just seems to be glaring and barely moving during the intro, though she picks up speed toward the middle of the performance. Carrie Ann says it’s a hard song to dance to and that it didn’t really come together. “It was a little bit in pieces,” she says sadly. Len compliments Tristan’s choreography and says Gladys coped well, but that she needs to be more crisp. Bruno calls Gladys a class act, though again echoes the difficulty on the dance, and thinks she lacked impact. Scores: 7, 6, 7 for a total of 20 points.

Actor William Levy and Cheryl Burke

Dance: Jive

“William knows nothing about ’80s hairband rock,” Cheryl says, exasperated. So this means William meets heavy metal band Steel Panther, identified as legends Michael Starr and Satchel, sporting lots of hair and headbands. “When I saw them walking in, I thought, ‘Who are these ugly women?’”William says, genuinely puzzled and winning the line of the episode. They try to teach him some moves and lend him a hideous long wig.

Luckily, William ditches the wig, and it’s much more upbeat than most of the performances this night. But it’s a bit of a mess as they lose timing, and Cheryl even loses her shoe in the process. Len is very stern. “You’ve got to nail the routines,” he complains, saying that William messed up the timing. Bruno says William went wrong several times, and tonight was a weak performance. Carrie Ann acknowledges that the room goes crazy for William — but playing to the crowd might be distracting him, because he struggled with the routine the whole way through. Scores: 7, 7, 8 for a total of 22 points. You would never know the judges were universally disappointed.

Disney star Roshon Fegan and Chelsie Hightower

Dance: Viennese Waltz

Chelsie complains that Roshon is very flexible, so his limbs are all over the place. Roshon complains that Chelsie keeps criticizing his dance moves. It’s a very depressing rehearsal session, though they make up when Chelsie says she believes in him, even though he’s having trouble grasping the waltz. Roshon just wants to hear three words from Len: “Good job, dawg!” He may want to try “Amercan Idol” for that one.

Speaking of which, Roshon and Chelsie spin around to “The Time of My Life” by David Cook, a former “Idol” winner. He manages to keep in time with all the steps, and Bruno loves the dance. “It was so cute, it was like watching the climax of a Disney movie!” gushes Carrie Ann, saying that Roshon is the best dancer out of all the men. (Which would make sense, given that he’s ... a dancer.) Then it’s up to Len, who goes with: “Good job, dawg.” In Len translation, that means Roshon performed with style. Score: 9, 8, 9 for a total of 26 points.

‘Extra’ co-host Maria Menounos and Derek Hough

Dance: Tango

The “will-they-won’t-they” couple of the season has to head to the doctor when Maria can barely dance, and it turns out she has a stress fracture and lots of bruises on her feet. Getting teary, Maria reiterates that quitting the competition is not an option, and she wants to have her rock star moment this week.

Derek helps the cause by styling his hair into a mohawk, and while Maria looks a little more cautious this week, she certainly doesn’t look like she’s dancing with two injured feet. Maria perches on Derek’s back during the judges comments, but she swears she’s fine. Carrie Ann thinks their chemistry was fantastic. Len observes that Maria has the best posture of the women this season, but it wasn’t the best dance because she lost control. Bruno is just impressed that she could dance that well on nearly-broken feet. Scores: 9, 8, 9 for a total of 26 points.

Pop singer Gavin DeGraw and Karina Smirnoff

Dance: Tango

Having been at the bottom two for the last two weeks, Gavin is convinced this time can be different — after all, it’s rock week, and he’s a rocker. Karina wants him to display the energy that he has on stage at his concerts, but they struggle in rehearsal. Luckily, the tango is a love-hate dance, and it’s fortunate since they seem to switch between loving and hating each other as they practice.

Gavin carefully steps through the dance, and even though he looks mad during the performance, he doesn’t have the energy to measure up to other dances. “I liked it,” Len says cautiously. “It had flair, and it had attitude.” He criticizes Gavin’s posture, and Bruno also thinks that his frame was bad. Carrie Ann, on the other hand, compares Gavin to Johnny Depp, and that he almost made up for a terrible technique. Scores: 8, 8, 7 for a total of 23 points.

Who do you think is going home this week?

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