Madhouse: After a seemingly innocent man is charged with murder, the women become enmeshed in a tangled suburban tragedy, racing to find the true killer. [S,AD] Ep4
Charlotte's Web: The four women delve into the mysterious death of Iris's suburban friend, uncovering a complex cluster of marriages built on lies and deception. [S,AD] Ep3
Wake: Subsequent deaths make it clear: San Francisco is in the grip of a killer with a dark and complex agenda and is now menacing Iris's own neighbourhood. [S,AD] Ep2
Presidio: Millie Harcourt and Jean McBrian travel to San Francisco and join forces with two American codebreakers to pursue a serial killer from their war days. [S,AD] Ep1