The former politician Michael Portillo revisits the family of a school friend who committed suicide as a teenager, discovering how the tragedy has coloured their lives ever since. His friend Gary was popular, a gifted musician and a clever student. But just before his 16th birthday he committed suicide, leaving a note telling his parents he loved them and asking them not to be sad. In detailed and moving interviews with Gary's parents and younger brother, Michael learns how incredibly difficult it was for them to fulfil this plea. The implicit message from Gary's family to anyone who may be in despair and thinking of ending their life is to think hard about how it is going to affect those they are leaving behind.