VERONICA MUST BETRAY SOMEONE SHE CARES ABOUT TO UNCOVER WHO KILLED LILLY KANE, BUT THE KNOWLEDGE PUTS HER LIFE ON THE LINE, ON THE SHOCKING, ACTION-PACKED SEASON FINALE OF "VERONICA MARS," TUESDAY, MAY 10 ON UPN

Harry Hamlin ("L.A. Law") Guest Stars as Aaron Echolls and Kyle Secor ("Homicide: Life on the Street") Guest Stars as Jake Kane

"Leave It To Beaver" -- In the shocking, action-packed season finale, a determined Veronica must betray someone she cares deeply about in order to solve the season-long mystery of who murdered her best friend Lilly Kane, but what she discovers puts her life in serious danger, on VERONICA MARS, Tuesday, May 10 (9:00-10:00 PM, ET/PT) on UPN. Michael Fields directed the episode from a script by Rob Thomas & Diane Ruggiero. Harry Hamlin guest stars as Logan's movie star father Aaron Echolls.

Meanwhile, on the eve of a reception for the Governor of Calif., Jake Kane (guest star Kyle Secor) asks Duncan if he really wants to know what happened on the night Lilly died. Later, Keith awaits the results of a paternity test.

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
Aaron Echolls: Harry Hamlin
Lianne Mars: Corinne Bohrer
Meg: Alona Tal
Madison Sinclair: Amanda Noret
Dick Casablancas: Ryan Hansen
Celeste Kane: Lisa Thornhill
Clarence Weidman: Christopher B. Duncan
Luke: Sam Huntington
Sean: Kevin Sheridan
Casey: Jonathan Bennett
Beaver: Kyle Gallner
Alicia: Erica Gimpel
Carrie Bishop: Leighton Meester
Shelly Pomroy: Melissa Hoover
Cole: Daniel Bess
Cheyenne: Jennifer Gareis
Waiter: Antonio Jaramillo
Cindy: Billie Jones
Coach: Carl Bresk

RATING: To Be Announced