The Where the crayfish sing ending is full of twists and will leave many viewers wondering not only how Kya killed Chase, but why she did it in the first place. Director Olivia Newman Where the crayfish sing is an adaptation of Delia Owens’ 2018 best-selling novel of the same name. The film stars Daisy Edgar-Jones as Kya, a North Carolina woman accused of murdering her ex-boyfriend Chase Andrews. The ending of Where the crayfish sing raises many deep moral questions, especially when it comes to why Kya killed Chase.