Ian Reilly is not even his name. He's actually the married Cormac Sweeney, a disgraced and abusive former police officer who trolls bereavement groups looking to scam vulnerable people like Grace.

In a flashback to Grace's final argument with 'Ian Reilly', it is revealed that after she confesses to JP's murder, he leaves and attempts to blackmail Grace.

Ian Reilly is not even his name. He's actually the married Cormac Sweeney, a disgraced and abusive former police officer who trolls bereavement groups looking to scam vulnerable people like Grace.