Roslund Hellstrom: Box 21 – Two young women seek revenge on the men who lured them from eastern Europe to Sweden with false promises of a better life. Meanwhile, a mysterious figure takes hostages in a Stockholm hospital morgue. With the lines between criminal and victim rapidly blurring, police inspector Ewert Grens struggles to untangle a complex and deadly web of secrets. Does the elusive Box 21 of the title hold the answer?