I think that Fitz is going to be REALLY mad in Unlocked because he still has feelings for Sophie but she's going to date Keefe instead in Unlocked because where we last left of in Legacy Fitz wanted to get back together but Sophie didn't. And he obviously really, really, likes her. And the Sokeefe ship is bound to sail in Unlocked. I think Shannon Messanger is going to make a big deal about how Fitz reacts in Unlocked. I think this is a great idea and I really hope she does. But what I find interesting is how Fitz will react. I mean, he almost KILLED Alvar when he didn't even have his memories. And in Candleshade Alvar told Keefe and Sophie that if anyone was going to add on to the infamous Vacker legacy, it's Fitz. I think that Fitz might join the Neverseen out of anger that Sophie doesn't love him for REAL. Not like when Keefe tried to be a spy, but like to actually join.
Please tell me what you think of this theory.