Missing pins from locks

[Kent Verge]

I was finishing up a make-ready and changing out the cylinders on the locks when I noticed that the old cylinders were missing the pins. The previous tenant complained about one of the doorknobs being loose, which made sense since someone had taken them apart at some point over the last five years. This was especially sinister because to the tenants, the locks functioned normally, but they would unlock with any key that fit the grooves (most any house key).

I understand that one of their ex's lived across the street for the first few years they were there. Creepy no matter who did it.