Who Is "A"? Our Prime Suspect List

Why it's possible:

• Mike was directly involved with Mona for a while. Even though the romance seemed legitimate, it's still suspicious.
• He's shown an angry streak, including that period where he'd break into people's houses! Seems like a pretty useful skill to have.
• He's punched Ezra before, and he's clearly not happy with him or any of the girls.

Why it's not:

• Most of Mike's anger problems come off as teenage angst. He doesn't have a huge motive for wanting to hurt Ali or the girls.
• Every time he does something mischievous, he gets caught. "A," on the other hand, always seems to slip through everyone's fingers.

Source: ABC Family