I'd recommend a classic : 'The Strange Case of Dr. Jekyll and Mr. Hyde' by Robert Louis Stevenson. It refers to a mental condition called “split personality” and is about 64 pages long. It's a really interesting book!
Also, "The Gift of the Magi" by O. Henry is a nice short story that our English teacher suggested us herself last year.
Also, "The Gift of the Magi" by O. Henry is a nice short story that our English teacher suggested us herself last year.
I hope this will be helpful.