When he opened his law and audit firm Firestone Duncan in Moscow in 1993, Jamison Firestone saw Russia as a land of opportunity. Today, he is essentially exiled abroad, managing his business from thousands of miles away, and afraid of what could happen to him should he return to the city he called home for 17 years.

Firestone decamped to London in December after a lawyer from his firm died under mysterious circumstances in a Moscow pretrial detention facility and in the midst of a long-running investigation by Russian authorities into one of his firm’s clients, Hermitage Capital Management.