The discovery of Ezra’s former girlfriend and a son he didn't know about creates significant friction in his relationship with Aria.
Some fans expressed frustration that massive betrayals (like Toby’s) were quickly forgiven, a pattern that critics argue taught the showrunners "the wrong lessons" for future seasons.
Critics noted that after the reveal of Mona as "A" in season 2, season 3 successfully raised the stakes by introducing the concept of an "A-Team" and the mysterious "Red Coat".
In a mid-season shocker, Toby is revealed to be working for the A-Team. This leads to Spencer’s emotional breakdown and eventual admission to Radley Sanitarium after she believes Toby has died.