I recommend this book if you like: 
-Adult mystery 
-Holiday setting 
-Multiple points of view and goes between past and present 

Fran is on the search to find out what really happened to her sister Jenna on Gozo island. Her sister was on a mental health retreat and she never returns. The family have been told it was a suicide but they want to do their own research to get answers as to why their Jenna would do such a thing. 

Fran signs up for the next mental health retreat happening in Wales which is ran by Tom and Kate the owners of SoulShrink. Fran doesn’t anticipate running in to three previous members of the retreat, they knew her sister and she feels they all know something which they are keeping secret. 

Jenna had slept with Tom the owner without realising that he was married to Kate. Tom was in love with Jenna and wanted to leave Kate and start a new life. Kate found out about the cheating due to recording the 1 on 1 sessions and she threatened Jenna to leave her husband alone or else all her secrets she shared in her therapy sessions would be exposed. A girl on the retreat, Renata, was very protective of Kate and her relationship and so she hit Jenna on the head with a rock and warned her away from Tom. What we later find out is that she is still alive and Damian had helped her escape the retreat and start a new life in Valetta, Malta. The family all reconnect and Jenna even has a partner and baby.

 

Fran decides to find out what happened to her younger sister, Jenna, two years ago. Jenna was at a retreat on Gozo when she disappeared and has never been heard from since, and two other people died. The man running the show, Tom Wade, served time in prison for his part in the fiasco, but he has now been released and is unbelievably holding another retreat, so Fran decides to attend and find out the truth once and for all.

I really enjoyed 'Strangers' , one of the author's early books but this one was a disappointment. I could tell most of what was going to happen fairly early on and the characters were mainly horrible. Tom was weak, Jenna easily led, Fran a caricature, and Kate unsympathetic. To say it was supposed to be a thriller, it wasn't very thrilling. It really wasn't an enjoyable read for me, but mine seems to be a minority viewpoint so don't let that put you off.

Thanks to NetGalley and publishers, Avon Books UK, for the opportunity to read an ARC. I am voluntarily giving an honest review.