Check out this review and more at On the Wings of Books 
 In my renewal of love for Young Adult books a couple years ago I've discovered that I really like time travel books and All Our Yesterdays was one that I was very excited about. The premise sound really cool and a bit different from other time travel books I've read and I was happy to see that it was one of SYNC Audio's free downloadable audiobooks this summer. 
 As with other time travel books there is a science behind it. Personally I like when they don't tell me too much because I'm not a science person and I don't really care to know the specifics. I just want to know enough to make the story work. For me the science behind everything worked. 
 At first I found the story to be confusing, but I feel like that is mostly the audio's fault, not the books fault (more on that later). It was hard to tell the difference between Em and Marina at times. Once I figured everything out though I really got into the story. The second half moved at a fast pace and I couldn't stop listening! 
 It's really hard to talk about the characters in All Our Yesterdays without any spoilers. There is so much going on between them and in the past/present and everything intertwines, which makes talking about the characters difficult. We have four main characters: Em, Marina, Finn and James. I liked Em and Finn, Marina sometimes got on my nerves and James was ok in a crazy kind of way. 
 The plot was both intricate and simple at the same time. Em and Finn were going back in time to prevent time travel being possible due to the effects it had on the world. In it's simplicity Em and Finn are just going back and stopping an idea, however they have been there and done that several times before without getting the necessary results. 
 While I enjoyed All Our Yesterdays I had a difficult time with the audiobook. The narration was ok, but there were two narrator, Em and Marina, and the voice was the same for both, so if I missed the name sometimes it took me a bit to figure out which time we were in. 
 Overall I would recommend All Our Yesterdays to anyone who likes action or time travel!