Capítulo 318: 315: Val's conclusion

Marshall stood silently in front of the expedition party as he took in the scene of newcomers crowding the station. 

'There's too many people at the station. Someone might take ill advantage of it to sneak inside the lower city.'

This thought crossed his mind after careful consideration.

If an average citizen of the kingdom were to sneak inside the lower city, it would not take long to find and deport them, but a normal person wouldn't do something like this, to begin with.

Only a person or devil disguised as a person would have to reason to sneak inside.

Marshall had no intention of letting a devil with a tangible body sneak inside the lower city under his watch. 

The potential danger it poses shouldn't be ignored. After all, these types of devils were typically at or above the intermediate grade. They were really, ridiculously strong. A prime example of this would be Morthos.