"This is a story about a terrible thing which happens to me. I have to warn you that nobody is bad or good here, or rather everyone is a bit bad and a bit good and the bad and the good moluscules get mixed up against each other and produce terrible chemical reactions. Did you know cheetahs cannot retract their claws?"

Six-year-old Billy loves animals, David Attenborough documentaries, and sneakers that flash when he runs. He does not love sitting still, the blood-soaked sky in Watership Down, or his father's cell phone.

When Billy runs into a busy street, ignoring his father's commands, he sets in motion a series of unexpected, family-altering events. WHAT I DID is a heart-wrenching reminder of how best intentions can lead to disastrous consequences, and how one rash decision can take on a life of its own.