Uncaged was a pretty fast paced book by John Sandford and Michele Cook. It is the first book in The Singular Menace series, with the second book expected to be published in July of this year (Outrage).
Shay and Odin Remby are orphans who were living with foster parents in Washington (?). Odin is a terrific hacker, but he doesn't have a lot of common sense. He has a soft spot for animals and has become friends with a group of animal rights activists. There is a girl in the group that he believes is his girlfriend, but they all might be using him a bit for his mad skills.
They target a research lab, Singular, which turns out to be more than they can handle. Odin ends up with a dog that appears to have had some radical surgery, and some encrypted flash drives. He contacts Shay only to let her know that he has to go into hiding because of this raid-gone-wrong.
Before she can think about it, Shay takes off to make sure her brother is okay. She ends up in California living with a bunch of misfit kids in a hotel that is owned by mysterious artist named Twist. These kids are themselves a cast of characters - not really bad kids, but all for one reason or another, needing a place to call home. Shay slowly starts to trust them and needs their help more than ever when she ends up with the stolen dog and sees Odin get kidnapped. They band together to rescue Odin and try to figure out what Singular is really all about.
I am looking forward to the July release of the second book, Outrage.