Novel about mental health issues and the Holocaust

What's left when the soul is shattered? 'Shards' is a stark tale of four disparate people coming together partly through circumstance and partly because each one is in one sense or another damaged, broken... Set in both Poland in 1943 and the London suburbs of the nineteen seventies, this novel has at its dark core the disturbing themes of mental illness and the Holocaust. Yet as the story progresses pin pricks of light permeate the darkness; and glimmers of love, hope, self-sacrifice and ultimately redemption are achieved by the novel's main protagonists.