In the last case of the season, Nikki and Cheryl investigate one of the most hotly discussed crimes of the season... phrogging! They take it back to 1941, where one man did the unthinkable... what is phrogging? How long can someone live in your house undetected? And are you safe? Nikki and Cheryl are about to find out.

Got a theory? Been lost in a rabbit hole? We want to hear from YOU! Email [email protected] to get in touch, or DM us @killerscultsqueens on Instagram. And follow Cheryl @cheryldragqueen and Nikki Druce @nikkimacabrelondon.

If you have been affected by any of the themes in this episode, please consider contacting the following resources:

The Samaritans helpline: 116 123

Confidential Emotional Support Line: 01708 765200

Hope Not Hate: 020 7952 118

Exit UK: 0800 999 1945

Safeline national male survivor helpline: 0808 800 5005

Sexual Assault Support Line: 01708 765200

Sane mental health line: 0300 304 7000