You may not know the stranger in room six. But they know everything about you.

It's been fifteen years since Belinda was wrongly convicted of her husband's murder. Now, she's ready for her life to begin again, and she's set on that happening at Sunnyside Home for the Young at Heart.

The owner, Mabel, has spent her life here. First as an evacuee during the Blitz and now as the care home's oldest resident, Mabel has held the secrets of this house for as long as she can remember. Secrets that could kill if in the wrong hands.

But history won't stay hidden forever and someone is onto them both. Watching and listening from room number six, they'll stop at nothing to find out the truth.

With a past this dark, is anyone as innocent as they seem?