The Map Of Scars: A Gripping Psychological Mystery Thriller

How well do you know your neighbors?
It has been 18 months since Coutts' neighbors' house burnt down and three generations of women allegedly perished inside. Coutts threw herself into the flames in an attempt to save them. As a result, she received terrible burns and now has debilitating scars, and the burden of guilt ways heavily at not being able to do more.
The problem is Coutts is seething and revenge is on her mind. She can't rest until the arsonist and murderer is caught. But she will need help. In steps, Freddie Cooke, socially awkward, germ-phobe Private Investigator. If the police can't find the fire-starter then Freddie will, even if his actions are slightly illegal.
As they narrow down the suspects to 5 women who grew up together, they discover the suspects, along with Coutts' dead neighbors, belong to the same secret organisation called Justice for Jane. But who is Jane? And why are these women committing crimes in her honor?