Za milliard let do kontsa sveta [Definitely Maybe]

The protagonist, Dmitry Alekseyevich Malyanov is an astrophysicist who, while officially on vacation, continues to work on his thesis, 'The Interaction of Stars with Diffused Galactic Matter'. Just as he begins to realize that he is on the verge of a revolutionary discovery worthy of a Nobel Prize, his life becomes plagued by strange events. First, Malyanov is visited unexpectedly by an attractive woman claiming to be his wife's classmate and food and wine arrive for them mysteriously and already paid for. Then his neighbor dies of an apparent suicide and Malyanov becomes the murder suspect.