Rules of Time Travel
The rules of time travel in the series are as follows:
- The time machine sends the traveller back in time by a random interval. Usually this is about a day but it may be as little as a few minutes or as much as a week. (N.B. In the final episode of the series it is found that the length of time travelled back can be controlled by altering the length of the photon rods; this is discovered by the research company Webb Biotech, who have also invented a time machine). However long you go back for, you must live through that time again (see rule 6).
- You must not meet yourself in the past. It is not clear what would result if you did, but it is presumed the consequences would be dire.
- You cannot change the past. One of the results of this restriction is that the effects of the time traveller's journey back in time are already visible "before" the journey is made.
- You cannot exist more than twice in the same time frame. If you try to go back a second time, the machine will simply fail to operate.
- When "in the past", you must get back to the time machine by the time you "left". Otherwise, you will be trapped in a "loop of infinity". This is what happened to Holly Turner's father.
- The time machine never travels into the future. Holly tells Jeff in the first episode "You can't travel into something that doesn't exist."
Read more about this topic: Crime Traveller
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