Status Updates From Crime na Mesopotâmia

I think my earlier guess is wrong.

Maybe the murderer is working with sr leidner for a long period of time. Maybe murderer know about the will of mrs. Leidner. He or she also know about copying handwriting. Mr coleman is very good at imitating handwriting. He said he is from england but he is of same idle age as the brothers of Fredrik boswan. He left America in early age after his brother death. So i think mr coleman maybe the murderer.

One layer of the suspense uncovered.