On the run
Definition 1 of 3
Pro Tip 1/3Crime Context
Use 'on the run' when referring to someone avoiding capture, often involving illegal situations. 
The thief was on the run for days before the police caught up with him.
Pro Tip 2/3Evasion Theme
'On the run' highlights the continuous effort to avoid being found, not just physical running. 
With the authorities closing in, the spy was constantly on the run.
Pro Tip 3/3Media Portrayal
Often used in movies and books to create suspense around a character’s efforts to evade capture. 
In the film, the protagonist was on the run, hiding in shadows and alleys.