Paradox

Anna is uninjured and can't explain why, while one of the Godspeed's passengers discovers Emery trapped in a crate below deck and is terrified when he witnesses the man suddenly, inexplicably, receiving a bullet to the chest. The men of Hokitika begin to piece together what happened on the night Crosbie Wells died, while Emery and Anna reconcile and, at their first kiss, a cosmic transference occurs and they trade souls. That night, they are visited by the ghost of Crosbie Wells

S1Ep5