 SCP-393 is an ordinary 9 cm x 14 cm blue day planner, with a year embroidered into its cover that always matches the current year. SCP-393 has the ability to link to a nearby subject via unknown means. Once linked, the day planner will appear in the hands of its owner whenever it is not being watched. Additionally, any event written in the past dates of the day planner are instantly recalled by the subject. As if they experienced it themselves. If the subject currently linked with SCP-393 dies, SCP-393 will choose a new owner within 10 minutes of the previous owner's demise.