"Hal Hunt has set up this organisation which goes around the world saving species and his son Fraser works with him on that. He's fallen out with Roger who's a freelance conservationist – there's some sibling rivalry there. Hal's slightly hand in hand with big business, he's slightly compromised, and Roger's more of a free spirit," said McGowan, a fan of the Price novels as a child. "Roger and his wife have disappeared and because Amazon's parents have gone missing, Fraser comes to meet her."