'TAXI BROOKLYN': A handbag designer enlists the help of Cat (played by Chyler Leigh, above) to find her missing son. (Linda Kallerus/NBC)

For the first time this season, the residents launch their evil schemes to attain veto power on “Big Brother” (CBS at 8 p.m.).

Also for the first time this season, the Top 20 perform live for the judges on “So You Think You Can Dance” (Fox at 8).

The Disney-ish sitcom “Young & Hungry” (ABC Family at 8) returns for its second episode with Gabi (played by Emily Osment) preparing for her first day as Josh’s personal chef as accusations of thievery get in the way of her real aspirations.

The docu-series “Drugs, Inc.” (Nat Geo at 9) chips away at Salt Lake City’s shiny veneer to reveal a town in the grip of a drug epidemic with law enforcement agencies trying to inform the Mormon community and shift the drug market away from cartels.

If you’re interested in watching the greatest film of all time tonight, ABC Family has Tim Burton’s 1988 gem “Beetlejuice” (9) starring Geena Davis and a much younger, far more dashing Alec Baldwin.

SERIES PREMIERE: For summer barbecue enthusiasts, “American Grilled” (Travel Channel at 9) takes a look at local grillmasters from various backgrounds as they compete against one another in the ultimate outdoor cooking challenge.

SERIES PREMIERE: “Dark Temptations” (Investigation Discovery at 10) delves into crimes inspired by perverse, sometimes deadly obsessions. The six-part series opens with a Florida man found pinned under his car and a woman who crosses the line when she discovers her boyfriend is a voodoo priest.

The hell-raising son of a handbag designer goes missing, and Cat is brought in to help find him on “Taxi Brooklyn” (NBC at 10). Also, a betrayal puts Leo behind bars.

“The Colbert Report” (Comedy Central at 11:30) welcomes “The Fault in Our Stars” author and Internet sensation John Green.

Actor Tom Cruise and reality starlets Kendall and Kylie Jenner stop by “The Tonight Show Starring Jimmy Fallon” (NBC at 11:35), along with music from Chrissie Hynde.

Actress and comedian Sarah Silverman comes to the “Late Show With David Letterman” (CBS at 11:35), along with experiments from kid scientists and then, ironically, the indie rock band We Are Scientists.

Actors Susan Sarandon and Ramon Rodriguez are on “Jimmy Kimmel Live” (ABC at 11:35), with a performance from Robin Thicke.

Rachel Lubitz