Mitu Murder: Handwriting experts called into service They are to see if Babul wrote on 2 books presented by person he was “having an affair with” PBI officials probing the Mitu murder case will send the two books, seized from her husband and ex-police official Babul Akter as "evidence of his extramarital affairs", to the CID for forensic examination. Babul got the two books -- "Taliban" written by Ahmed Rashid and "Best Kept Secret" by Jeffery Archer -- as gifts from a woman in 2013, and he reportedly wrote about his extramarital affairs on different pages of the books, said sources in the Police Bureau of Investigation.