Where the dark fish swim, is a letter from Michael, a deeply troubled father, to his estranged son, Huck, written as they travel together toward the end of a journey Michael set out on to make peace with his past. Michael tells Huck of the six people who mattered most to him in his life and how, in turn, he has gone to visit each of them. He also begins to explain why he abandoned Huck and his mother and why, very soon, he will need to do it again. And, of course, he tells Huck of the dark fish.