Nigeria, Oct. 23 -- In the third and final part of a three - part undercover investigative series, FISAYO SOYOMBO documents the soft side of his time in police cell and prison, and how prison, police and court officials conspired to abduct him after his cover was blown.

I had not yet spent a full day at Pedro Police Station, Shomolu, Lagos, when I asked myself the question: "Who sent me?" But it was nothing new; I knew I would ask myself that question at some point during this investigation, and I knew too that it would not make me call it off. If you asked any hardcore investigative journalist, they would say the same of almost every daredevil story they have covered.

As I lay in that warm cell in the wee hours of Tuesday July 9, it da...