Trilokeshwar Shonku (Bengali: প্রফেসর শঙ্কু) is a fictional scientist and inventor created by Satyajit Ray in a series of Bengali science fiction books of the same name published from 1965 on. He is the central protagonist of the series. Professor Shonku resides in Giridih. His house contains a laboratory, and he lives with his pet cat, Newton, named after Sir Isaac Newton and his man-servant, Prahlad. He was born in the year of 1912 but his year of death is unknown.
Topic: a) Theory to become invisibleb) Macaw bird
Plot: Professor Shonku invents an oral drug, using which can make a man invisible. Gajanan Tarafdar, a rival scientist, tries to steal the formula. At the same time a talking Macaw comes to Professor Shonku's garden. Professor Shonku gives the bird shelter in his own house. After few days Professor Shonku's formula gets stolen and at the same time the bird goes missing as well.
Location: Giridih
Source: Wikipedia