S5, E2: New Messiah cop, Joseph Walker (Marc Warren) has now deciphered the killer's crazy message. But Joseph is becoming more deeply embroiled in a past, which seems to resonate with the killer's terrifying mission. Mel (Marsha Thomason), gets in deep with Joseph's number-one suspect as Terry (Daniel Ryan) is forced to lie to the woman he secretly loves (Nina Sosanya). Meanwhile, The Rapture approaches.