Alot of this book I didn't like, parts I downright hated, but I'm giving it four stars anyway. Why? Because past the terrible start and cliched insecure/obsessive main character (stuff no guy wants to read about), there's actually a great, serious time travel story here. I just wish I could excise the first part of the book from my head, but since I can't I won't mention any of it and pretend I never read any of it either, except to say the beginning of this book is really, really bad - but stick with it, it gets better.
Anyway, past that this book actually has a pretty good plot, with a serious treatment of 1860s Civil War and 1960s civil rights stuff interwoven into it. Who knew? When the main character, Casey, is actually put into situations dealing with those issues (cause she's a time traveler who can't control her traveling), she's actually serious, intelligent, and knowledgable, and comes out way better than my first impression of her. I liked her interactions with the various people in the past, particularly Willie and his family, how she hid her knowledge and stuff from the future, how she survived in the 1860s. Add to that various quite intriguing plot twists, a friend in the past being conscripted into the Union army, a proposal from a fugitive slave hunter, dealing with prejudices and all that, and I can almost completely forgive the horrid start.
Surprisingly, the modern parts of this book got good too. There are a couple of side plots with Casey's brother and family, and the past and future plots actually connected to each other quite well in the end. Since Casey basically disappears from one time and blinks into existence in the other, it could be've been very hard to follow, but all the time traveling, tracking the past plots and the present plots, was very well done.
There are quite a few loose plotlines for the sequel (including a HUGE twist from the ending), how her time traveling works, the other time travelers she's met, etc, and from the looks of the preview of the first chapter, it doesn't start as badly as this one, so I hope this series continues to be a light, fun, quick, but engaging read - just with less stuff that makes me want to vomit.