A young girl who finds herself in a situation she never imagined and, in the trials of this new life, discovers she's brave and perhaps has always been brave but didn't know it. Tris may not be a traditional hero but she's admirable in how she handles what life throws at her. Four is mysterious and intriguing at first and, in the end, he's honest in how he is and turns out to be exactly who you want him to be. A very good read.