VERONICA'S SEARCH FOR A CLASSMATE'S BELOVED TERRIER LEADS TO CLUES IN AN EVEN BIGGER MYSTERY AFFECTING PETS ALL OVER NEPTUNE, ON "VERONICA MARS," TUESDAY, APRIL 19 ON UPN

Alyson Hannigan (UPN's "Buffy The Vampire Slayer") Guest Stars as Trina Echolls and Harry Hamlin ("L.A. Law") Guest Stars as Aaron Echolls

Three Original Episodes Until the May 10 Season Finale, Which Will Reveal Who Killed Lilly Kane

"Hot Dogs" -- While helping her classmate Mandy search for her missing Jack Russell terrier, Veronica stumbles onto a bigger mystery, which affects pets all over Neptune, Calif., on VERONICA MARS, Tuesday, April 19 (9:00-10:00 PM, ET/PT) on UPN. Nick Marck directed the episode from a script by Dayna Lynne North.

Meanwhile, tensions mount in the Echolls family as Trina (guest star Alyson Hannigan) tries to convince the now-retired Aaron (guest star Harry Hamlin) to take a part in her new boyfriend's independent movie. Later, Weevil is arrested for breaking into the Kane residence and taking something from Lilly's room.

Veronica Mars: Kristen Bell
Keith Mars: Enrico Colantoni
Wallace Fennel: Percy Daggs III
Duncan Kane: Teddy Dunn
Logan Echolls: Jason Dohring
Eli "Weevil" Navarro: Francis Capra
Lilly: Amanda Seyfried
Celeste Kane: Lisa Thornhill
Aaron Echolls: Harry Hamlin
Trina Echolls: Alyson Hannigan
Deputy Leo: Max Greenfield
Mandy: Claire Titelman
Hans: Matthew Carey
JW: Theodore R. Mercer, Jr.
Dylan: Jeff Parise
Barry Randall: Roy Werner
Spaniel Man: Carlos Cervantes
Day Laborer #2: Arturo Medina
Lenny: Jesse C. Boyd
Bridget: Virginia Hawkins
Woman: Janice McQueen

RATING: To Be Announced