The Masked Singer is back, with fans tuning in every Saturday night to try to guess which celebrity is behind each costume.

Comedian Joel Dommett has returned to host proceedings, with 13 mystery stars singing familiar songs on stage, while dressed up in an outfit obscuring their identity.

Guessing along with the in-studio audience and the viewers at home are the judges: Mo Gilligan, Davina McCall, Rita Ora and Jonathan Ross.

One way to help narrow things down is checking out who’s been on the series before – as it seems unlikely they’d return to the show (although not impossible).

So here’s a full list of who appeared on seasons one, two, three and four…

Season one

Winner: Nicola Roberts – Queen Bee

Jason Manford – Hedgehog

Katherine Jenkins – Octopus

CeeLo Green – Monster

Denise van Outen – Fox

Jake Shears – Unicorn

Skin – Duck

Kelis – Daisy

Teddy Sheringham – Tree

Justin Hawkins – Chameleon

Alan Johnson...