Amy regains consciousness after being attacked late at night to find Garth leaning over her. Amy freaks and turns to PJ, accusing Garth of trying to kill her - and further incriminating him as the key serial killer suspect. PJ is following up on this, in spite of Garth's denials, when Amy changes her mind - she now recalls the killer had a distinctive smell, and suddenly this narrows the field of suspects considerably. A house is searched, and PJ and Garth go to collect the main suspect, only to discover he's scarpered. And then Amy disappears. Has she been snatched by the killer? Meanwhile, Kelly and Joss find themselves tracking an errant elephant, which has disappeared from a small defunct travelling circus.