I think Sam is the serial killer. Connections: Letitia - ex-lover Sonny’s nanny. Carly - ex-lover Sonny’s ex-wife, also ex-lover Jax’s current wife. Emily - ex-lover Jason’s sister, arch-enemy Liz’s best friend. Rick Lansing - I don’t think we ever found out who stuck him to the wall. Anyway, previous one-night stand, mother’s ex-husband. Maxie - current lover Lucky’s ex-girlfriend.

Sam’s had a lot of lovers. And she’s out for revenge.