Alex returns from Rome with only a vague silhouette of the Black dagger 'executioner' and problems of his own: Sam consults mole hunter Faber, who insists not to include the weird genius as suspect, so they check up on his affair with FBI partner Michelle Prado, who finds out he stole her access code and considers turning him in, but is killed by a mystery third party. The family must dispose of her corpse while Victor must plant a bug in Resident Arkady Isakof's own office, which turns out even more risky then expected, even fatal for Isakof's driver, who is falsely suspected and executed. Meanwhile the executioner, Oscar Christoph , ruthlessly acquires and tests super-explosives.
—KGF Vissers