The crime fighting team of clinical psychologist Tony Hill and police detective Carol Jordan investigate a serial killer who is targeting women who look suspiciously like Carol. Guilt and grief have driven a wedge between long time crime-fighting partners psychologist Tony Hill and ex-DCI Carol Jordan. But just because they're not talking doesn't mean the killing stops. Someone is killing women. Women who bear a disturbing resemblance to Carol Jordan. And when the evidence begins to point in a disturbing direction, thinking the unthinkable seems the only possible answer. Cornered by events, Tony and Carol are forced to fight for themselves and each other as never before.