Hidden clues. Deadly wrecks. A ticking clock.

When AJ Bailey heads to the Florida Keys for a scuba diving conference, she's looking forward to a relaxing trip. But when an old friend goes missing and his wife is in trouble, the holiday is over.

Amid a sea of threats and lies, AJ has 24 hours to find her friend and the mysterious package he took, before payback will be taken in lives.

With no idea where to start, and time running out, AJ soon discovers the answers may lie deep inside the infamous shipwrecks of Key Largo.

Book Twelve in this best-selling series dives into the waters of the Florida Keys with fast-paced, edge-of-your-seat suspense, and a guest appearance by the marvellous Emily Durand from Nick Sullivan's 'The Deep Series'.

Read in series order or as stand-alone novels.

A lady intent on refusing the fortune she desperately needs. A gentleman caught up in a smuggling scheme.

Kate Matcham needs a fortune or a husband. She wants neither. With a tainted inheritance in the balance, she receives one offer to become a scoundrel's mistress and another offer of a marriage of convenience. Before resigning herself to a choice, she accepts the invitation to visit a childhood friend, considering it a last hurrah before embarking on a bleak future. The visit goes sideways when she falls for the gentleman her friend intends to marry, a man well out of Kate's league--and one who seems to be hiding something. Smuggling has overtaken the county, and it seems that everyone is complicit in the trade that killed her father. One by one, her options dwindle as she struggles against her strengthening feelings for a duplicitous man, a determination not to hurt her friend, and keeping the promise she made long ago: to stand up to the people who killed her father.

For two happy couples, the cruise of a lifetime may cost their lives.

Mae Barlowe's annual beach trip is anything but a vacation.

It's the anniversary of the worst day of her life.

When her husband and best friend surprise her with a last-minute itinerary change in the form of a couples' cruise, she struggles to hide her reservations about the new plan.

A week spent cruising around in a tropical paradise sounds like a dream come true to everyone else, but for Mae, it's an eerie reminder of chilling memories from her past.

Once on board the ship, a mysterious stranger causes confusion among the group, leading them to ask unsettling questions of one another.

Before they can get real answers, tragedy strikes.

Trapped on the vessel as it ventures toward their first destination, the friends struggle to come to grips with their new reality.

How do they stay safe when danger seems to be lurking around every corner?

Who can be trusted when nothing is quite what it seems?

How far will they go to protect the ones they love?

Sun, sand, and secrets await on this cruise to die for.