Larry Dexter's Great Search, Or The Hunt For The Missing Millionaire is a children's adventure book written by Howard Roger Garis. The story follows Larry Dexter, a young boy with a detective spirit, as he sets out to find the missing millionaire, Mr. Crawford. The only clue Larry has is a note left behind by the millionaire, saying that he has gone on a trip around the world, but Larry believes that something more sinister is at play. Larry, along with his friends Dick, Bob, and Lola, travel to various locations around the world, including Egypt and the South Pacific, in their pursuit of Mr. Crawford. Along the way, they face a number of challenges, including dangerous animals, treacherous weather, and even pirates. Eventually, the group discovers that Mr. Crawford has been kidnapped by a group of criminals who are after his wealth. Larry and his friends devise a plan to rescue the millionaire and bring the criminals to justice. In the end, they are successful in their mission, and Mr. Crawford is reunited with his family.