A selected group of mysteries of the writer of the van, Robert Barr, five mysterious issues by the genius investigator Eugene, the Mont, who collects the threads of the case and follows its details, then surprises the reader with a simple and clear solution even though he was absent from all heroes in addition to readers who are surprised by the simplicity of the solution and the style of Eugene, the smooth Mount In dealing with issues. The stories are: the puzzle of the lost wealth - the gang of the mind - the silver spoons guide - the five hundred diamonds - the bomb's Ramy puzzle