What can Pretty Little Liars viewers look forward to on Monday's new episode? In two words: Haleb and trouble.

As you can see in the following photos from "Someone to Watch Over Me," Caleb and Hanna will be going strong (although this clip implies a possible problem brewing). Meanwhile, Spencer will find herself at the center of a police investigation, as authorities raid her room.

Do you think she really had something to do with Alison's murder? Debate that question in our Pretty Little Liars forum and click on the following images for larger looks at upcoming scenes...

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.