Poets have often been attracted to the mystery story, sometimes even worked in the genre. Give the names of the following aficionados of the whodunit.

1. He used citations from a Sherlock Holmes story, "The Musgrave Ritual," in one of his greatest poems.

2. Highly regarded for his light verse (in the '40s and '50s), he wrote a light-hearted academic mystery called "The Widening Stain," under the name W. Bolingbroke Johnson.

3. A poet laureate and father of a well-known contemporary actor, he based his series detective on W.H. Auden.

4. Prominent as a leftist American poet during the 1930s, he is somewhat forgotten now, even though his best known thriller has been filmed twice, once under its own title (with Charles Laughton) and more recently as "No Way Out."

All entries (one per person) must be clearly written on postcards and mailed to: Book Bag, The Washington Post, Washington, D.C. 20071, and must include complete return address and competition number. The winning entry will be the first correct answer drawn at random. Employees of The Washington Post Company and their families are not eligible to enter. Entries must be received no later than June 28. The winner's name and city of residence will be announced in the July 1 issue. A Washington Post Book World book bag will be sent to the winner.

Answer to Book Bag #577: The poets who celebrated the village of Grantchester near Cambridge were Rupert Brooke and Sylvia Plath.

Winner: Bridget Kelley, Alexandria