Turtles All the Way Down is John Green’s first book since the widely popular “The Fault in Our Stars” , which was released in 2012. During his hiatus from writing, John Green was struggling with mental illness, which is reflected in his new book.

The main character, Aza Holmes, also struggles with mental illness throughout the book. She is obsessed with germs and bacteria, to the point where she reopens a wound on her finger several times a day to drain it of possible infection. With the help of her best friend Daisy, she attempts to solve the mystery of a missing millionaire, while working through her own issues. While trying to solve the mystery, she bonds with the millionaire’s son, Davis.

While at times a bit cliche, this book is much more mature than John Green’s previous works, such as “An Abundance of Katherines”, “Paper Towns”, and “Looking For Alaska”, due to the fact that it has much less humor. It also has more of an obvious plot, unlike Green’s prior books, which events seemed to serve the purpose of adding humor, rather than actually furthering a plot. That said, I have enjoyed most of his books, including this one.

If you enjoy mysteries with a touch of humor, you should definitely get this book.