 Seemanto-heera

Sheemanto heera (The Frontier Diamond) is a detective novella written in Bengali by Sharadindu Bandyopadhyay featuring the sleuth Byomkesh Bakshi and Ajit Bandyopadhyay.Written in 1934, it is the third such work of fiction featuring Byomkesh and is written in first-person narrative, as experienced by Byomkesh's friend, associate, and narrator, Ajit Bandyopadhyay.