Complex sentence: In 1936, in only his tenth outing, Sharadindu Bandyopadhyay, wanted to retire Byomkesh, and so married him off (an almost unheard-of thing for detectives across the world), and thought that was the end of it.
Split into simpler sentences: In 1936, in only his tenth outing, Sharadindu Bandyopadhyay, wanted to retire Byomkesh. He married him off (an almost unheard-of thing for detectives across the world) and thought that was the end of it.