Megan lives with her husband of three years, Chris. They spend a lot of time apart because of the nature of their individual jobs. Megan has never "strayed" although she suspects that Chris has. When Chris is home he likes things to go his way.

Megan's mother is in a nursing home with the early onset of dementia and Megan constantly looks for signs that her mother's memory loss is hereditary. Chris realises this, and plays on it.

The story begins with Megan's discovery on her husband's phone of a picture of herself in underwear that she has never seen. That's how she knows that he is seeing her identical twin Leah. She and Leah have a very fractured relationship and rarely see each other.

Her knowledge that Chris is having an affair with Leah gives Megan "permission" to find someone new for herself. She also decides to confront Leah, with dreadful consequences.

From that point, you are hooked. The story becomes compulsive with sections narrated by Megan, Chris, and Leah, cleverly following on from each other. Until an incredible finale. Megan told you what was going to happen, but did you take her at her word?

The lockdown caused by the global pandemic adds another element to the whole scenario. ( )