Samantha is excited when Jo invites her on a long train trip to a flower show. Much to Jo's surprise Eddy and Walt land up tagging along. The four friends are looking forward to spending time together. The train is crowded, the rooms are tiny and Peter, an old friend of Eddy and Samantha's, is on the train and acting very suspiciously. However, the four friends still enjoy their time together. But then their trip comes to a grinding halt when one of the passengers dies. The local police believe it is a suicide, but Eddy is adamant that it isn't. When the police decide to let the train continue to its destination, Eddy, Walt, Samantha and Jo decide to investigate what they believe is a murder. What is Peter up to? Will the 'Sage Gardens Sleuths' find the murderer or will they be stopped in their tracks?