Another awesome episode. The only ... not so great parts are the Iris and Detective Pretty Boy scenes, but now that they're in the open, maybe they'll be better integrated into the story and in some interesting ways.
Although, I'm still not a fan of Iris being The Flash's version of Chloe Sullivan. I realise that she's a reporter in the comic books, but maybe instead of believing she could have been a sceptic. Like a Dana Scully type. Or someone who actively argued against embracing meta-humans because of the danger they posed. Or she could have some shades of grey to her perfect personality (e.g. using her father to secretly access police files and publish sensitive information).
With Detective Pretty Boy, I'm guessing he's vague and bland for story purposes. But, it would still be nice to see a hint of something other than a one-dimensional Prince Charming.
I can't remember from last week, but wouldn't Team Flash have reason to believe that Multiplex is still alive. Sure, Barry thinks that the Prime fell and died, but just a few hours later Simon Stagg was murdered. I would expect one or all of them to be worried that Stagg's killer was Multiplex and that the Prime wasn't killed or that he somehow jumped into an alternate body.
Again, I may have missed it, but does anyone know where Barry lives? I was surprised to see that Iris still lives at home with her father, but since she's studying I guess it's understandable. When Barry awoke from his coma, no-one mentioned anything about his living arrangements (i.e. whether his lease was terminated, his stuff packed up or sold, etc). From memory, we've only seen him in his lab, but not in his home. Does he live with Joe and Iris? Or is he living at Star Labs?
Also, it was great to see Caitlin Snow fleshed out a little. I hope we have a similar style episode for Cisco soon.