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The girl on the train is a thriller centered around a murder. The narration is captivating. The author also does a decent job is building the story from the points of view of three characters. I like the way the characters of Anna and Megan are built over time. One can find the reason of their current behavior from their past experiences.

The story is narrated by three female characters. The protagonist Rachel is an alcohol addict. Her alcohol addiction has cost her marriage and job. Even after losing her job, she continues to commute to her workplace daily via train. Even after getting divorced, she continues to call her ex-spouse. Her ex-husband Tom is now married to Anna. Anna is the second narrator who is very opportunistic and self-centered. During her commutes, Rachel observes a couple and assumes them of having perfect married life. Rachel names them Jason and Jess whose real names are Scott and Megan respectively. Megan is the third narrator of the story. Megan is carefree and promiscuous. Megan works as a nanny in Tom's household for a brief period. While you find the female characters in grey zone, you will find the male ones in dark zone. Tom is a very selfish and manipulative person. The only thing that he cares for is having sex. Scott is shown as a overtly possessive and abusive person. The author builds the female characters and explains the reason of their eccentricities. The same effort is not spent on the male characters. The plot is built around the murder of Megan.

“Conquering the Electron” covers the history of electricity and electronics. It starts from static charges and magnetism. In a chronological order, it gradually covers the great discoveries and inventions related to electricity, the innovators and the business and social landscape. It ends the narration with mobile phones. The authors have tried to limit the technical description to the minimum to make the book suitable for common audience. Still they have tried to cover the basic concepts well. They have put more focus on the engineers, scientists and entrepreneurs and their behaviors. They have covered the social landscape during the innovations well. They have also covered the business and legal aspects of these innovations.
I like both history and science. So, I found the content very engaging. I think teaching scientific inventions and discoveries with its historical context makes those easy to understand. On the other hand, keeping the historical context out not only makes the topic dull, but also tough to grasp.