My trunk lock mysteriously broke.

Does anyone know how to repair my trunk lock? There is a piece missing, but I don't know what piece. It has always worked properly, but I think someone tried getting in the trunk and they broke it.20200119_085401.jpg 20200119_085405.jpg 20200119_085412.jpg 20200119_085357.jpg Thank you!

It's a 1976 Plymouth Feather Duster