Definitely Maybe

Dmitry Alekseyevich Malyanov is an astrophysicist; just as he begins to realise that he is on the verge of a revolutionary discovery, worthy of a Nobel Prize, his life becomes plagued by strange events. He is visited unexpectedly by an attractive woman claiming to be his wife's classmate, and food and wine arrive for them mysteriously - already paid for. Then his neighbour dies of an apparent suicide and Malyanov becomes the murder suspect. *This book may have minor shelfwear.