Pradosh Chandra Mitter - yes, he is the same person as you imagined, but not with exact characteristics. He is not a detective by profession but solving crime is indeed his passion. His well-known companion Lalu babu is with him.
In this book Pradosh solves three mysteries. Yes, you can definitely say this is a fan fiction.

This remarkable book was written for the parents of the Italian poor. But it is about poor everywhere: their anger is the anger of every worker and peasant who sees middle-class children absorbed effortlessly into schools as teacher’s favorites.
Eight young Italian boys from the mountains outside Florence wrote this passionate and eloquent book. It took them a year. Simple and clearly, with some devastating statistical analysis of the Italian education system, they set out to show the ways in which attitudes towards class, behavior, language and subject-matter militates against the poor. They describe too, the reforms they propose, and the methods they use in their own school - the School of Barbiana, started under the guidance of a parish priest and now run entirely by the children.
Letter to a Teacher was a best seller in Italy and has been published subsequently in many languages.

A description of old India in the eye of a foreign woman, the writer herself, Emily Churchill Thompson Sheets. She described tales of Kalighat and other worship places of Goddes Kali in her time in 20th century.

As written by the writer himself : "In my Peasant Life in Bengal I make the peasant boy Govinda spend some hours every evening in listening to stories told by an old woman, who was called Sambhu’s mother, and who was the best story-teller in the village. On reading that passage, Captain R. C. Temple, of the Bengal Staff Corps, son of the distinguished Indian administrator Sir Richard Temple, wrote to me to say how interesting it would be to get a collection of those unwritten stories which old women in India recite to little children in the evenings, and to ask whether I could not make such a collection.
So I did that, all the stories were in Bengali, and I translated them into English. "

"The complete Sherlock Holmes" contains Arthur Conan Doyle's entire Sherlock Holmes works, including 4 novels, "A Study In Scarlet", "The Sign of the Four", "The Hound of the Baskervilles", "The Valley of Fear" and each of the 56 short stories. Thus this ebook covers all of the contents of the different books published originally i.e. "The Adventures of Sherlock Holmes", "The Memoirs of Sherlock Holmes", "The Return of Sherlock Holmes", "His Last Bow" and in "The Case-Book of Sherlock Holmes"

This volume compiles 10 adventures of Sexton Blake, originally published between1908 and 1909, unfortunately it was not possible to get the names of the authors who might have written these stories with surety, so we are not able to add any writer names.

The character of Sexton Blake was built in England during the late 19th century.
This was elaborated in the first part of this book published by us. This volume compiles 15 adventures of Sexton Blake, originally published between1908 and 1925, unfortunately it was not possible to get the names of the authors who might have written these stories with surety, so we are not able to add any writer names.

Do you know that 4500-year-old Indus script signs were in use much after the Harappan era, when Indus civilization is believed to have been ended ?Are you aware of the use of Royal monograms of Indus in Maurya, Kushan and Gupta Era and also outside India e.g. Greece?
In this book writer used a different technique to decipher Indus script via phonetic values of basic Indus signs, vowel diacritics ,letters used to mention quantity (number, volume and weight) etc. He has gone through the pottery inscriptions first and tablets thereafter and then discussed about the names and other words found in Indus seals and inscribed on other items.
Out of 4000 inscriptions found so far , of which 2000 are still readable, Rajat was able to read 1,296 Sarasvati Scripts, it took 15 years .
Now all his methods and the journey to decipher the Script has been put into this book.

Literature challenges one not only to think about ethical conundrums but also makes one sensitive and compassionate. When it blends with euphoria and nostalgia, the integral parts of human mind, it toughens and becomes sturdy. Man loves to live in his past memories to be happy. The experiences form a part of human personality and shape their behaviour pattern.
Nostalgia stores for us our memories which we relish lifelong. Even the lamentable days of past become pleasant. Though we might have ignored some not too pleasant incidents in our bygone days yet somewhat bitter experiences appear to be impressive and attractive. It is aptly said that the panorama of mountains appear beautiful and splendid from a distance. The bitterness of nearness is intolerable. The more we grow in years, the more our past recedes. Distance from the life lived long ago makes it sweet and desirable. Strain and stress of the present becomes frivolous when we slipand relapse into euphoric nostalgia.
The instincts of euphoria and nostalgia have been vividly handled by the legendry writers of all times. They have given various dimensions and definitions to the readers to redeem these human aspects yet many more stones are still unturned. These two instincts in the oeuvre of the legendry writer Ruskin Bond are the anchor points that suggest the scope of study. I have chosen to put forward the very idea about how a man’s body, mind and soul blend with traces of his past memories and support the holistic growth.

Our father’s blood-drenched face and faltering words were a forewarning to us. It was a signal to us to make our future bright through formal education. His broken words were a real eye-opener. Education is essential for dignity, social respect and emancipation from lifelong exploitation. Penury has been his close companion. He blessed us to follow a safer path.
The Struggle of a Bonsai is a humble endeavour to fulfil his last wish, minutes before his death on the Janmashtami festival at Mathura in 1951. Look at the coincidence! The first draft of this story was completed on the Janmashtami Day in 2024, exactly 73 years after his final departure. Had he been formally educated, his life might have been qualitatively different. I can visualize his blood-mixed tears peeping lovingly at me. Inaudible, feeble and incoherent! Each letter of this narrative is a tribute to him. He suffered all his life, but he wanted us to live a respectable life.
I have tried to commune with his spirit that we are a faithful band. If he were to see us, his tears of regret would have been wiped by our sincere efforts. I have failed to procure his photograph, and I don’t know how to draw him. Alive he is in our innermost heart chambers! The story has drawn his superb vision. Dear father, be no more despondent. May you rest in peace!

Of the rare contemporary works, which throw light on the social life of the Calcutta of Warren Hastings and Sir Philp Francis one of the rarest and certainly the most interesting is the Original Letters of Mrs. Fay. The book introduces Mrs. Fay and her husband to us on 18th April 1779, and in July 1795, the narrative leaves her, at a low ebb in her fortunes.
Mrs. Fay survived to see Calcutta in her youth and other places from then Egypt, Malabar, Murshidabad to "Chandernagore".
Well, In that time, as it has been observed, Calcutta, being a place of frequent partings, is, in consequence, a place of short memories.
Mrs. Fay, in advanced years, returned to Calcutta, about a year before her death, and set to work to put her letters into print, it may indeed be wondered how it is that a book so often laid under contribution, so full of adventures, containing so many clearly cut descriptions of interesting persons and place.

A unique free text writing about life and more, if you want to widen your thought, this book is for you.