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

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

Unlocking her voicemails throws suspicion on somebody close to Stevie.

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

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

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