"The Client" is a legal thriller novel written by John Grisham, published in 1993. The story follows an eleven-year-old boy named Mark Sway, who becomes the sole witness to a lawyer's suicide and learns about a hidden secret regarding a mafia hitman. As Mark navigates the dangers of this knowledge, he seeks help from Reggie Love, a determined attorney. The plot unfolds with themes of innocence, legal battles, and the struggle for survival, as Mark must protect himself and his family from those who want to silence him.