The scene where they finally caught Rob was literally unbelievable but then Cheryl’s fantasy novels would be too.
I think it ended that way to leave scope for a sequel. Rob isn’t going to go away, Claudia can attest to that. Anyone who crosses him will never be free, just as Cheryl described to Alice in that scene in the garden.
He looks to be lining up his next victim in Jessie the therapist or at least concocting a story that will see him let loose again very soon.
I’d like to see a sequel where Alice, Cheryl, Claudia, Joyce and Norm collaborate to get their money back and some well-deserved revenge. And where is Sir Ralph Unwin (Derek Jacobi) reported missing right at the very end? Is he a witting part of the conspiracy or another dupe?