Sea of Deception by Lily London

Cecily Young has learned to live with the unexpected when it comes to Lincoln. She was complicit in getting Chase to play by a different set of rules. He didn’t like it, but he understood her need to reconnect with her daughter who was lost several years ago. Lincoln wasn’t going to reveal the girl’s whereabouts without a few conditions, including Cecily and Chase’s help stealing a painting—an escapade that nearly killed them.

This time they have to contend with partygoers and diplomats on a yacht. One of them holds the secret antidote to a deadly poison. Chase might’ve had reservations about securing the antidote, but Lincoln has poisoned him. As Chase’s symptoms evolve, they have no idea who amongst the hundred guests is holding his life in the palm of their hands. That won’t stop Cecily from getting her hands on the antidote. But what happens when the person holding the cure isn’t willing to hand it over willingly?