(All times Eastern).

Grimm (NBCat8) Nick, Hank and Wu investigate a deadly Wesen who attacks victims in their sleep.

The Vampire Diaries (CW at8) Stefan makes a risky deal with Cade in hopes of saving Damon's soul.

Shark Tank (ABCat9) The sharks field pitches from a husband-wife duo, whose durable bags were inspired by firefighters, and a pediatric nurse with an innovative product designed to calm crying babies.

Emerald City (NBCat9) Dorothy discovers Lucas's true identity.

20/20 (ABCat10) The weekly news program remembers Playboy model and reality TV star Anna Nicole Smith, who died 10 years ago after an accidental overdose.

Premiere

Animal Nation With Anthony Anderson (Animal Planetat10) The "Blackish" star hosts this new late-night talk show featuring celebrities, experts and (of course) animals.

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SpeciaLs

Be My Valentine, Charlie Brown (ABC at 8) In honor of Valentine's Day, the network re-airs this classic 1975 Peanuts special — and another Cupid-themed episode, "A Charlie Brown Valentine," which originally aired in 2002.

Smokey Robinson: The Library of Congress Gershwin Prize for Popular Song (WETA at 9; MPT at9:30) The iconic R&B crooner is honored for his influential songbook. The tribute concert, taped in November at DAR Constitution Hall, features performances by Esperanza Spalding, Kip Moore, BeBe Winans, JoJo and Corinne Bailey Rae.

Nick Cannon: Stand Up, Don't Shoot (Showtime at 9) The "America's Got Talent" host talks race, his marriage to (now ex-wife) Mariah Carey and more in this one-hour comedy special.

World's Funniest Animal Commercials (Animal Planet at 9) "Brooklyn Nine-Nine" star Terry Crews hosts this one-hour look at ads featuring cute animals.

Returning

Reign (CWat9) Season 4.

Late Night

Bill Maher (HBO at 10)Sen. Al Franken (D-Minn.), Jim Jefferies, Karine Jean-Pierre,

Fallon (NBC at 11:34)Charlie Day, Kendall Jenner, NxWorries.

Colbert (CBS at 11:35)Will Arnett, Pete Holmes, Paul Mecurio.

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