The Marked One repays Sidorovich by performing certain tasks, and in the process receives information about Strelok's possible whereabouts. With no other leads to his past or the cause of his amnesia, the Marked One follows the information from contact to contact, tracing Strelok's past movements and learning more about his supposed assassination target; the more he learns about him, the more he recovers scattered memories. Eventually, the Marked One follows a lead to a factory in Yantar. Yantar is the home of a Brain Scorcher, a field which effectively destroys the mind of anyone who comes within its range, zombifying and turning them violent and hostile. Scientists studying the phenomenon determine that it is man-made and recruit the Marked One to enter a secret laboratory underneath the factory to disable it.