A cryptic puzzle. A family secret. A deadly betrayal.

When her dad dies during a business trip to Romania, Kat Barrett blames herself for their failed relationship. She's racked with guilt, haunted by strange dreams about the crash that killed him, and she'd do anything to have him back.

Then a package arrives. It's from her dad and contains a list of clues — one of his classic scavenger hunts. Desperate for answers, she follows the clues to Bucharest and meets Maksim, a local with a dark past who offers to help. Kat doesn't trust him, but when she hits a dead end, she's left with no other choice.

As they work together, decoding the clues and trying (unsuccessfully) not to fall for each other, the scavenger hunt reveals a deadly secret the dreams have been pointing to, something Maksim's old crime ring has been hiding all along, and Kat has walked into their trap.

Can she beat them to the final clue — and solve it — before she suffers the same fate as her dad?