What is the author's tone in the novel, Three Times Lucky?

The tone of the novel suggests the author wants readers to immediately like Mo like a little sister. She is spunky, opinionated, smart, observant, and persistent. The title puts a positive spin on Mo's life, which is something Mo does, too, despite having started her life floating down a river on a makeshift raft. Mo knows that she's lucky, but this sentiment is deepened through the telling of Mo's experience during Mr. Jesse's murder investigation.