free agent | Agent Orange | agent | Talent agent | double agent | literary agent | Political Agent | Chelsea Handler | Free agent | Paranoia Agent | Agent Cody Banks | The Secret Agent | Secret Agent X-9 | MRI contrast agent | Fear Agent | Agent Provocateur | Thickening agent | The Station Agent | station agent | Moscow hostage crisis chemical agent | John Johnston (Indian Agent) | Invisible Agent | General Agent | Forté Agent | Election agent | Confidential Agent | Chemical Agent Resistant Coating | Bacteriostatic agent | Antonia Handler Chayes | Alkylating antineoplastic agent |
Tkach's agent handler was SELIM KHAN, or KHAN, thought to be Avram Landy who also had contact with Albert Kahn, Eufrosina Dvoichenko-Markov, Walter Bernstein, and Bolesław Gebert.