Who are the main characters for book summer of secrets by Paul Langan?

* Finn Sutherland-Quinn: A 12 year old boy who moves to the village of Knockavoy with his family and discovers a dark secret that has been kept from him for years.

* Lilah Walsh: A 12 year old girl who lives in Knockavoy and becomes friends with Finn. She is also struggling with her own secret.

* Jack Sinclair: A 12 year old boy who lives in Knockavoy and is the main antagonist of the story. He is a bully who enjoys tormenting Finn and Lilah.

* Mr. Sutherland-Quinn: Finn's father who is a workaholic and is often too busy for his family.

* Mrs. Sutherland-Quinn: Finn's mother who is struggling with her own mental health and is often unable to take care of her children.

* Gramps: Finn's grandfather who lives in Knockavoy and helps Finn to uncover the dark secret that has been kept from him.