Star Law, I'm commandeering your vessel!

So Star Law can commandeer a star ship in pursuit of interstellar criminals or sathar agents. Imagine a marshal commandeering a vessel but the captain and crew are engaged in some illegal activity and plan to kill him after the void jump. Their acting nervous and twitchy in the meantime, can the marshal figure it out before the jump him and space his body? System for start of adventure would need to be one without a militia so that he cant call on the militia to send an assault scout to halt the vessel he's pursuing.