The Imposter S1E4 18 December 2025 on 5

On Thursday 18 December 2025, 5 broadcasts The Imposter!

Season 1 Episode 4 Episode Summary

The upcoming episode of “The Imposter,” airing on the 5th, promises to be an intense conclusion to the series. This thriller, featuring Kym Marsh, has kept viewers on the edge of their seats, and the final episode is set to deliver even more suspense.

In this episode, Simon, Amanda, and Helen find themselves driving out to a remote area in the bushland. The journey is not just a simple drive; it is filled with tension and unresolved issues. As they confront each other, long-held secrets and truths are revealed. This setting adds to the drama, with the isolation of the bushland heightening the stakes.

Fans can expect emotional confrontations that will shake the family dynamics. The revelations that unfold are likely to change everything for Simon, Amanda, and Helen. With Kym Marsh leading the cast, viewers can anticipate a powerful performance as the characters face their past and each other. The series has built up to this moment, and it will be interesting to see how it all wraps up in this final episode.

What Time is the Episode On?

The episode of The Imposter will be broadcast on December 18 2025 on 5 at 10:00 PM.

Is the Episode New?

The episode of The Imposter is all new!

The Imposter Cast & Stars

Main Cast

Episode Videos & Previews

Watch The Imposter Online

Watch the show online

The Imposter Series Information

Set in a coastal Victorian town, Imposter centres around a bitter family feud as matriarch Helen refuses to sell her sprawling seaside hotel, despite pressure from her three adult children. Little do they know, Helen is hiding a secret, a daughter she gave up for adoption decades ago. When Amanda suddenly appears, Helen welcomes her with open arms— but is Amanda who she says she is? The lucrative hotel is the ultimate prize, and a twisted scheme soon spirals into betrayal and ultimately, murder.