The Christmas Key

A hot summer Christmas Day is just around the corner in the Australian seaside town of River's End. Beachside BBQs and sumptuous dinners are on the menu.

But Martha Blake is like a dog with a bone, determined to solve the last of the cottage mysteries. She and great-niece Christie begin a secret investigation.

Meanwhile, Thomas is busy with his own clues and enlists a reluctant Martin.

At Palmerston House, loving new couple Elizabeth and Angus face their greatest obstacle, and it might be too ...