For their Nana's 80th birthday party, the entire Darker family reunites for the first time in years at Nana's house on a remote island. At midnight, Nana is found dead. When another body follows and the tide traps them on the island, the family realizes they must confront their darkest secrets or risk all being killed off one by one.

Feeny returns with a And Then There Were None style locked room mystery where family members trapped on an island begin dying one by one. Daisy Darker shines with Feeney's typical style in the backstory chapters. However, in the present-day narrative, Daisy made an odd protagonist and I struggled to feel committed to the book. Although I correctly guessed the twist early on, I kept discarding my theory since it didn't really make sense and I was hoping for something less cliché.