one thing is common to everyone including murderers.. they get no special dispensation.
Time passes for them, the exact same way time passes for everyone else.. events happen at immutable and irreversable times. a murderer has to play time backwards to deflect this. To make a plausible story that is contrary to what happened, even if no one sees you, it has to adhere to the relentless passing of time and the spacial limits that time and distance entails.. ... Allisons home, to the Kholo Creek Bridge.. that time, and distance is no shorter, nor any longer for murderers than it is for anyone else.
And murderers are bound by geography too, the same way everyone else is.. they cant defy gravity and space.. they have to move over ground , just like you and me. They have a start point .. that is. .their base, their domicile, and a finish point.. that is, their base.. they dont drop from the sky, and murder someone, then evaporate .
Gerard , you , me, whomsoever, is firmly attached to earth, with its sometimes inconvenient spacial and time constraints. We leave from somewhere, we travel over the same measurements applicable to all, we do what we have to, we travel back, all under the same clock, and the same attachment to terra firma.
Its when one tries play time backwards, and distance backwards that the thing becomes unravelled.