Mercy by Jussi Adler-Olsen is Scandinavia's new bestselling crime writing sensationMerete Lynggard vanished five years ago.
Everyone says she's dead.
Everyone says the case is a waste of time.
Everyone except Copenhagen detective Carl Morck.
Turning over this old case he thinks he's found a clue missed by his predecessors.
It takes him on a journey, one that upsets his superiors, that troubles his colleagues, that causes him to break rules.
But at the end of it a woman waits who has been missing five years.