

Since Lyov only killed one victim, the term "M.O." is somewhat misused. Lyov is never actually profiled by the BAU, though he is depicted as taking immense pleasure in brutalizing, taunting, and cutting pieces off the completely helpless Chernus and presumably subjected his other victims to similar treatment. The mobsters cut up the bodies of the couple and Fyodor, putting the pieces into garbage bags which they later throw off a pier.

After being ordered to drop the knife he had planned to kill Chernus with, Lyov is shot to death by the mobsters, alongside Natalya. When Natalya goes to wait outside while Lyov deals with her father, several Russian mobsters appear, sent by Arseny, who is no longer willing to tolerate Lyov’s actions and tasked the mobsters to kill him and rescue Chernus. Realizing his girlfriend is conflicted about killing Chernus, Lyov tells her that they cannot leave him as a witness and allows Natalya to say goodbye. When the money is finally sent by his father, Lyov betrays Fyodor by fatally stabbing him, then prepares to kill Chernus until Natalya arrives. When the BAU become involved in the abduction investigation, Lyov, angered by this, cut Chernus's ear off two hours before the ransom deadline and has a boy drop it off at the Chernus home, along with a note saying the ransom has been raised from $100,000 to $500,000.

Keeping Chernus captive in a meat locker, Lyov taunted and brutally beat the man, barely kept in check by Fyodor. A year after starting the abductions, Lyov abducted Natalya's father while he was returning home one night. Living under his mother's maiden name to cut his ties with Arseny, Lyov began abducting Russian immigrants in Baltimore, Maryland, in 2006, alongside his girlfriend Natalya Chernus and partner Fyodor, planning on using the money received from the ransoms, which Arseny always paid from the mafia's fund, to flee the country and live a life of luxury.

The reality, he said, is Roggio wanted to punish Saar for being disloyal and send a message to other employees they would suffer the same fate if they did not obey him.Born sometime in the early 1960's as the son of a Russian mob boss ("pakhan"), Lyov's father, Arseny, was unable to acknowledge his son due to one of the principles of the Russian mob stating that members had to cut all ties to their families and never have children. Scott Claffee, an attorney with the Department of Justice's national security division, refuted Bartolai's characterization of Roggio's conduct. Desperate times call for desperate measures." "He was trying to get out of a situation by any means he could. "How do I say what Ross Roggio did was OK? It's not," Bartolai told jurors. Duress is a legal defense for breaking the law in certain circumstances. In his closing argument, Roggio's attorney, Gino Bartolai, acknowledged Roggio took part in the torture sessions, but argued he did so under duress because he feared he would be harmed. In one instance, Roggio wrapped his belt around Saar's neck and hoisted him into the air until he lost consciousness. According to an indictment, Roggio led multiple interrogation sessions during which he directed Kurdish soldiers to suffocate Saar, a native of Estonia, with a plastic bag, shock him in the groin area, beat him with fists and rubber hoses, force him to run barefoot on sharp gravel, and threaten to cut off one of his fingers.
