Quinn does it to Liam, outside the cliff house, with a gentle push. No witnesses.
Aly does it to Hope (out of envy), in the Forrester showroom, with a falling spotlight. Claims amnesia/temporary psychosis, Thorne covers for her.
Carter does it to Maya (turns out he is a psycho stalker after all), in the bedroom, because she turns out not to be over Rick. With a pillow (Othello vibes, - the play, not the DJ). Will eventually turn himself in.
Stephanie's ghost does it to Brooke, in her living room at midnight, going poltergeist with the heavy sundial table. Obviously gets away with it because ghosts can.
Pam does it to Quinn, at Eric's house, with a poisoned lemon bar, covers it up by doing the dishes thoroughly.
Katie does it to Bill, by pushing him through the windows at the CEO office at SP, claims he "fell".
Okay, who's left?