The fractured events of Stevie's murder start to swim into focus for River.

River and Ira uncover what Stevie was investigating before her murder.

CCTV footage causes the investigation into Stevie's murder to change direction.

Unlocking her voicemails throws suspicion on somebody close to Stevie.

River begins to suspect that the man he chased to his death was innocent.

Under intense scrutiny, River must battle to keep his fragile mental state in check.