Jacob Two-Two is a series of children's books written by Mordecai Richler: Jacob Two-Two Meets the Hooded Fang (1975), Jacob Two-Two and the Dinosaur (1987) and Jacob Two-Two's First Spy Case (1995) written by Mordecai Richler, and Jacob Two-Two on the High Seas (2009) written by Cary Fagan. The character is said to have been inspired by Jacob Richler, the author's youngest son. Every character in Jacob's family has the same name as their counterpart in the real Richler family. However, despite the names, Richler stated that the characters were not based on his family.