He explains that there was something in Alison's (Sasha Pieterse) grave that would have proved his innocence, and tells Spence that "somebody you know well has you completely fooled." Then he says that "people lie, but medical records don't." Is he talking about Page 5? Jenna (Tammin Sursok) and her "blindness"?
Clearly, Garrett knows far more than he's letting on. Will Spencer eventually team up with him or will they stay at odds? Check out the sneak peek below.
Catch an all-newepisode of PLL on Tuesday, June 12 at 8 p.m. ET/PT onABC Family.
Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter@BeccaMartin47.