I just read a story like that yesterday when searching about stolen packages. The woman said she was home unexpectedly for a delivery and when she answered the door the delivery woman looked very surprised and hurredly handed her the package and almost ran away. She saw that the package had been opened and taped shut and then that the items were missing! She had to chase down the driver and confronted her. She said the driver was really nervous and they fruitelessly searched the truck. She then got a strange note from the driver that she was SURE that the items would turn up, almost promising they would be.
She didn't get the items and she was out $200. She believes the driver stole items or knew they were stolen.