Secret She Keeps by Lena Diaz

Searching for the truth could be a deadly mission.

Raine Quintero is desperate and she’s willing to kidnap PI Callum Wright — the one person who can help stay her brother’s execution. Raine raises the stakes by offering a lead on a killer Callum’s pursuing — without revealing the secret she’s actually keeping. Racing against time, they must find the answers before one man dies — and another kills again.