Trying to remember a book about a serial killer who kills his friend, mother and father. He is also a ring maker if I remember right. His dead friend’s wife figures out he is the killer. He tries to kill her young son but she outwits him. Some scenes such as descriptions of the location of a hous...

From Jhumpa Lahiri's "Interpreter of Maladies": In a series of notebooks, in the evenings before his parents settled his marriage, he had listed the common etymologies of words, and at one point in his life he was confident that he could converse, if given the opportunity, in English, French, Ru...