What happens when you can no longer keep a secret?

When Arthur Cotton sees a body washed up on the beach, difficult memories come flooding back. He kept the books for the Brighton mob back in the day and got out on friendly terms. But retirement came with conditions - mainly to keep his mouth shut. Fifty years on, it's trickier. Dementia is taking hold and he's getting leaky. His former bosses are worried. Arthur didn't just keep their accounts, he also kept their secrets. Now there's going to be a reckoning.

It's up to Arthur's daughter, Susan, a carer for the elderly, to find out what her father knows. What he's been saying and to whom. There are dangerous people around, and they're beginning to lose their patience. She'll have to turn detective to encounter a Brighton she barely knew existed, and to turn up parts of her father's past that are just as dark.

Peter Hanington delves into Brighton's shadowy corners in this gripping new series starring the brilliant Susan Cotton.