Sometimes, we may be in a confusion that we should use ‘in night’ or ‘at night’.
Usually, with NIGHT ‘at’ is used. It means any night. E.g.- I never watch TV at night. This park is quite unsafe at night.
In the night- refers one specific night., means during the night. E.g- Someone stole my car in the night.
Did you hear that harrowing noise in the night?
Hope, now your confusion is over.