Killer Prom premiered on Lifetime last night with Erica Starring as Maya Wilson. When Maya Wilson, 17, loses her mother in a tragic boating accident, the excitement of her senior year of high school is shattered. But when her deceased mother’s hip and beautiful distant-cousin, Sienna Markle (Yvonne Zima) moves in with Maya and her father, Tony (Mark Lutz), things start looking up. Sienna gets Maya excited about her life again, especially her senior prom — the biggest high school event! Sienna will stop at nothing to make it a perfect night for her young cousin…including murder.