In the book's preface, the author writes: "Let anyone stop to consider how he individually would be affected if all electrical service were suddenly to cease, and he cannot fail to appreciate the claims of electricity to attentive study."In these days when we take for granted all kinds of technology - communications, entertainment, medical, military, industrial and domestic - it is interesting to learn what progress had been made in the fields of electricity and technology by the beginning of the 20th century...

Monsieur Lecoq is a captivating mystery, historical and love story: Around 11 o'clock, on the evening of Shrove Sunday 18.., close to the old Barrière d'Italie, frightful cries, coming from Mother Chupin's drinking-shop, are heard by a party of detectives led by Inspector Gévrol. The squad runs up to it. A triple murder has just been committed. The murderer is caught on the premises. Despite Gévrol's opinion that four scoundrels encountered each other in this vile den, that they began to quarrel, that one of them had a revolver and killed the others, Lecoq, a young police agent, suspects a great mystery...

Ernest Ray is a young boy who sets out to reclaim the inheritance that was unjustly with held from his father and given to a cousin. (Introduction by Abigail Rasmussen)