Libby Day was seven when her mother and two sisters were murdered in "The Satan Sacrifice" of Kinnakee, Kansas. She survived--and famously testified that her fifteen-year-old brother, Ben, was the killer. Twenty-five years later, the Kill Club--a secret secret society obsessed with notorious crimes--locates Libby and pumps her for details. They hope to discover proof that may free Ben. Libby hopes to turn a profit off her tragic history: She'll reconnect with the players from that night and report her findings to the club--for a fee. 
 I found this immensely more enjoyable than Gone Girl, which is also by Gillian Flynn, simply for the fact I didn't want to punt characters in the face with my foot. 
 The characters are all fully fleshed out, fairly nuanced, with sides and angles and depth. I liked Libby, I liked Ben and the characters I was not supposed to like, I had reasons not to like them beyond "because they are a narcissistic sociopath". 
 There were some spots that annoyed me. For instance, there were two sequential chapters had two different characters in two different settings being all cagey and evasive and talking around things instead of about things. Up until this point, everyone had been pretty forthright and the mystery was just mysterious because of missing pieces, not because of willful obfuscation. It felt very both very soap-opera-ish and also like its sole purpose was for padding. 
 Also, the mystery was kind of obvious but I was alright with that because the characters kept my interest. 
 The audiobook was quite well done, with a pair of narrators that were clear and emotive.