Episode 4

Questions mount and suspicion spreads over the brutal deaths of the Hadler family on their Australian farm.

Policeman Aaron Falk is facing up to what's hidden in his own past to help solve secrets of the present.

Now Falk rekindles an old friendship with Gretchen.

Richard Goulding reads Jane Harper's crime thriller.

Abridged and produced by Sara Davies.

First broadcast on BBC Radio 4 in September 2017.