The teenage son of Alistair and Jane. He falsely claims his father is abusive and is actually a serial killer responsible for multiple murders, including Katie and David. He attempts to kill Anna but is defeated and dies after falling through a skylight.
Ethan manipulates Anna initially before revealing his lethal intent toward her.
A father-son relationship complicated by Ethan's criminal actions and manipulation.
A direct law enforcement versus serial killer dynamic driving the investigation.
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