Cold Hard Murder

Jemma Stark

Junie B. Jones

Barbara Park, Denise Brunkus

Love You Hard

Abby Maslin

Brain Aerobics Math Puzzles

Derrick Niederman

The Sunday Times Book of Brain Teasers: 50 Hard (very Hard) Master Problems

and Victor Bryant and Ronald Postill

The Ultimate Book of Riddles and Brain Teasers For Adults and Kids: 222 Easy to Hard Riddles and Brain Teasers

A.C. Brooker

Brain Rot, Shopping at Costco of middle age