The Book of Answers.

In the final book of the Nod trilogy, Merlin Turtle answers all of Nod's unanswered questions. The narrative like the previous books is a collection of short topics for consideration. Nod deals with transitioning off his antidepressants and comes to terms with his PTSD. There are, however, more than a few distractions to deal with. Within these distractions Merlin crosses the fourth wall and provides insights into his own mental health.