This entire series has kept my son interested for the last couple of years. We've read them all, taken a break, then re-read them ... some 3 times now. Great to read together, or alone. By them all, but watch out for the 99 cent ones -they split the first book or two into 2 or 3 mystery sets for 99 cents each. Just spend $4 & get the whole book : )

Get it