Set in the bleak environments of London's homeless community, The Echo is the mystery thriller from crime queen Minette Walters.

It was the smell that Mrs Powell noticed first. Slightly sweet. Slightly unpleasant . . . It shocked her badly to find a dead man in the corner, his head slumped on his knees.

Who was Billy Blake, other than a homeless alcoholic who wandered the streets?

Why was he found dead from starvation in one of the richest areas of one of the richest capitals in the world?

And why did he die alone in the garage of wealthy architect Amanda Powell - a woman whose wealth can only be explained if her husband is dead . . .?