This book represents everything I love about the suspense genre. This feeling that something bad is about to happen--you don't know when, you don't know how, but it is, and as you keep reading the story unfolds until you get to the terrifying conclusion. 
 Into the Darkness alternates between past and present in England, and we get to see Catherine when she was a young, carefree party girl who had a small circle of friends she hung out with. The current Catherine is a pathetic fraction of her old self--someone who suffers from PTSD and crippling OCD to cope with her fears. 
 How has she changed? She no longer wears bright colors. She doesn't go out and hates crowds. She counts footsteps. She takes circuitous routes home each day. Suits, police, even the color red makes her fall apart or have a panic attack. Truly, it was hard to read because she was essentially a prisoner in her own mind. 
 Lee, her ex who caused her to be this way, is a monster (and that's being kind). The violence he inflicted on Catherine during their "relationship" was difficult to read, so be prepared. The way he not only took control of her life, but ingratiated himself with her friends was shocking and left me asking were these the worst friends ever, or is this guy really that good of a con artist. 
 Finally, along comes Stuart, who not only becomes a love interest but offers her the tools to break free from her debilitating behavior. And that was another part I enjoyed about the book. Stuart didn't save her. Catherine found the strength to save herself, and the healing steps were put in motion none too soon, because Lee gets released from prison, and he's up to his old tricks. 
 Into the Darkest Corner is an excellent choice for anyone who enjoys suspense or psychological thrillers.