Calling A Dead Man by Gillian Cross
Published by OUP

Hayley cannot accept that her brother John is dead.   He was an expert with explosives and demolishing buildings and there is no way he would run back into a condemned building risking his life – and Annie, John’s fiancée
agrees with her.   The two of them decide to travel to Russia to see the place where he was killed to find out exactly what happened.   They soon discover there’s more to John’s ‘death’ and a lot of people don’t want them to find out the truth.   Meanwhile, a stranger with no memory stumbles out of the Siberian woods into a remote village.   Is this John?   And if so, who will get to him first?   Hayley and Annie?   Or, the Russian mafia?