Over the years, Del has refused to send him bus fare, changed her phone number, and asked him not to come home. Now her manic-depressive son, Mark, needs a lifeline again, and she must decide how much more she’s willing to give.

Through the four seasons, Night Navigation takes us into the dizzying world of the addict and his mother, one filled with dealers, boot-camp rehabs, and Rumi-quoting sponsors. During one long dark year, through relapse, missteps, and despair, a mother and son fitfully steer toward the first sign of spring: the unfailing return of the horseshoe crabs.

Hopeful and unflinching, this novel powerfully navigates the troubling legacy of a family and the paradoxes of a world gone mad, adding new depth to our understanding of illness, addiction and the redemptive power of family.