The fire house mystery

Benny finds a fire man helmet in the attic he shows the helmet to Violet,Henry and Jessie then they ask there grandfather is this your helmet then their grandfather brings them to the fire have a tour there grandfather doesn't work there any more he stays home all day. Benny found a fire truck and went in it somebody asks Henry,Violet,Benny and Jessie to re paint the fire station when they leave the fire station at night somebody comes in and takes the paint off when they go back in the morning they haft to re paint it all over again.Jessie,Benny,Henry and violet got mad they were wondering who took the paint off.the walls it took