I'm trying to make this as spoiler free as possible, but if you want a completely unspoiled experience please refrain.
We left our Peculiar children and Miss Peregrine as a peregrine in a few small boats, rowing away from their island home and into...well they aren't exactly sure what. They hadn't made much of a plan beyond "We need to get away and go somewhere else" so they are rowing towards where they think land will be. It takes hours and it's a harrowing trip but they arrive on dry land, though they've lost all their supplies in a boat turn over. They think they are safe but the wights are not far behind, complete with blood thirsty sounding dogs.
They eventually get to London, but it is not without a fair amount of trouble.
There are gypsies,war torn London close calls with the bombs during the blitz, unexpected Peculiars, really creepy monsters, killer bees and a freaking crazy plot twist at the end that left my mouth agape.
I love that in their search for Miss Wren they go to St Paul's Cathedral. Christopher Wren designed churches all over London, so I liked that little nod. (Wikipedia has a list, with pictures.) Also the little scene between Emma and the 2 sisters in London broke my heart a little bit, but I liked it.
I give this book 3.5 out of 5 stars. I hope that Ransom Rigg's is hard at work at the next installment. And by hard at work I mean hardly stopping for food and water and bathroom breaks. I don't want some George R Martin, take-my-sweet-time thing happening here. I'll not allow it!