From Greece to Antarctica
After finding an enormous treasure with his cousin Alex, Max's family has built a big new house and is enjoying their good fortune, especially since his mother's cancer is in remission. However, Max's friend Evelyn's scleroderma worsens, and he and Alex travel to London for the funeral of Basile. While there, they meet Basile's niece, Bitsy, and find that there may be a secret cure, the clues to which are in the London Reform Society archives in a paper left by Verne himself. With the help of their uncle Nigel, Max, Alex and Bitsy set off on an 80 Days Around the World style adventure to find the ingredients for a cure they hope will help their friend. Unfortunately, Nigel leaves them to go out on his own and collect the ingredients before they do, but this does not stop the friends from a whirlwind adventure through Greece, Siberia, Nepal, South America and Antarctica. Their quest takes on even more urgency when Max's mother's cancer returns, and eventually, his father calls him back. Luckily, they have found all of the ingredients, but after using them successfully on Max's mother and Evelyn, some go missing, insuring that more adventures will occur.
Max is on the autism spectrum, which leads to occasional odd behavior that surprises new people they meet. His emotions have smells, he interprets things literally, and he sometimes asks awkward questions. This is not a huge part of the plot, just an added richness in Max's character, which is a nice way to add diversity to an adventure series.
I often recommend that readers alternate series while waiting for the next book in a new series to come out, and Max Tilt is a fun addition to an action/adventure line up that includes Stokes' Addison Cooke Vegas' Pyramid Hunters and Nix's Time Twisters.