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

Amanda Seyfried, Ben Belack, Boo Arnold, Brandon Hillock, Corinne Bohrer, Dan McLellan, Daran Norris, Erica Gimpel, Harry Hamlin, Jennifer Gareis, Kyle Gallner, Kyle Secor, Lisa Thornhill, Michael Muhney, Michelle Wolff, Roy Werner, Ryan Hansen, Steve Rankin