What is the summary of the broken flute book by shrada dwivedi?

The story is "Expert Detectives". This story is About a Boy named Nishad and his sister Maya and their mysterious neighbour Mr Nath. This story is about how Nishad and Maya grow suspicious about their neighbour Mr Nath and start thinking that Mr Nath is a criminal hiding from the police. Then they become detectives but a sudden feeling grows in Nishad that Mr Nath is a poor man who has no friends and this Nishad tries to prove to Maya.

sorry i only know till this much.