Schedule murder. Leonov N.I., Makeev A.V.

A signal received a signal to the duty unit: a man was hanged on the railway bridge, there are witnesses. The deceased is Evgeny Shanin, Doctor of Sciences, developer of a secret project in the field of alternative energy. Investigators of the Gurov and Kryachko establish that almost everyone who worked with the killed on this topic died a violent death. Moreover, all the murders took place exactly the first day of each month. The last assistant Shanin, a programmer, survived. Detectives suggest that the killer will try to remove him. Only a few days remain until the next first day...