The word is out - the True Way were involved in Cai's death. As the island reels, an obvious suspect emerges... but are Grace's theories about to be turned on their head?
Where to Watch Episode 4
Cast of Episode 4
Anjli MohindraGrace Narayan
Jill HalfpennyDCI Ann Fletcher
Adjoa AndohLady Heather Nancarrow
Mark Lewis JonesGruffudd Prosser
Lu CorfieldLowri Bain
Sam SwainsburyFather Douglas Carrisford
Marc WarrenDr Ian Prideaux
Lauren MoraisLucy Popkin
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