 Item number. SCP-220. Object Class. Safe. Special Containment Procedures. SCP-220 was housed in an empty condominium on property recently acquired by Research Sector 9. The subject believes the building to be occupied by other residents and should be allowed to persist in this belief. A false bus stop has been installed near the building's entrance. This measure has proven sufficient in deterring SCP-220 from wandering outside the containment perimeter. SCP-220 exhibits trepidation when venturing beyond the building's lobby, most likely due to mobility challenges. The subject will sometimes remain seated at the bus stop for upwards of one hour before returning indoors. SCP-220's room has been provided with a telephone connected to an automated recording service, ostensibly a courtesy of the residents. Dietary, medical, and recreational needs are to be ascertained from these recordings and several live video feeds. New requests should be submitted to Dr. Hart for approval or denial. In light of incident 220p, only D-class subjects are approved for in-person contact with SCP-220 and should be immediately quarantined after testing, in accordance with Sector 9's Type II Contagion Procedure. Description SCP-220 is a multiracial English-speaking human male, aged 76 years as of 515-12. SCP-220 presents behaviors symptomatic of disassociative identity disorder, alternately referring to himself and behaving as one of two distinct identities. It is uncertain whether SCP-220 is affected by a psychological disorder or is deliberately playing the role of two persons. In SCP-220's public and private behavior, the identity of Ormond Garibaldi alternates with that of Ali G, a name which corresponds with the subject's birth certificate. Any individual who interacts with SCP-220 in person will be fully convinced that these identities are two separate persons. Two variations of this phenomenon have been observed. SCP-220 presents as Ali or Ormond and refers to the other persona as a friend or relative. In this case, even when they have been previously informed of SCP-220's condition, test subjects unhesitatingly accept SCP-220's statements as fact. SCP-220 presents as Ali or Ormond and switches identities during the course of the conversation. The differences between these two personas are not drastic, but recordings demonstrate that the switch is always accompanied by a marked change in posture, tone of voice and rhythm of speech and personality. Nevertheless, SCP-220's conversation partner will not perceive a change, but react as if one individual has left the room and a second entered in their place. In rare cases, test subjects will behave as if they are conversing with both Ali and Ormond at the same time. Despite the anomalous nature of these conversations, test subjects never exhibit fear or distress during or when asked to recall time spent with SCP-220. The effects of SCP-220 are irreversible, regardless of whether an individual is informed of SCP-220's nature before and or after the in-person test. Within 4-6 hours of contact with SCP-220, affected individuals will begin to display signs of slight disorientation, forgetting their purpose in entering a room or the subject of a conversation. This disorientation gives way to a permanent state of identity confusion. Affected individuals will begin to perceive every person they come into contact with as two distinct individuals. The afflicted will address a single person, either as if they are speaking to two people at once, or alternating between two distinct conversations. The majority of affected subjects perceive one of these illusory identities as a close friend or relative, regardless of appearances or whether conversational partner is a stranger or acquaintance. Incident 220P excerpt from the notes of Dr. Hart. The secondary effects of contact with SCP-220 were discovered accidentally during psychiatric evaluation of D7905 by Dr. Palermo. 24 hours had elapsed since D7905's exposure to SCP-220. The affected individuals' confusion and disorientation had increased, to the point of several times referring to Dr. Palermo as his father. 30 minutes into the interview, recordings indicate that Dr. Palermo also began to display signs of confusion and disorientation, alternately addressing the interviewee as D7905 and his son. The effects of SCP-220 were determined to be highly contagious, spread via in-person contact, including eye contact with no accompanying verbalizations. Five individuals were subsequently quarantined. D-class subjects were terminated. Dr. Palermo's condition has deteriorated from identity confusion to a state resembling advanced Alzheimer's disease. The contagiousness of these symptoms has been proven to increase with their severity. Individuals who observe SCP-220 via audio or audio-visual recordings demonstrate no anomalous effects, provided that these recordings do not take the form of a two-way conversation with SCP-220. Addendum 1 On 12612, SCP-220 sustained serious bruising after a fall. D9120, under pretense of being one of the building's residents, was instructed to assess the subject's injuries. SCP-220's emotional distress was observed to exacerbate its anomalous effect on D9120, who became rapidly disoriented, forgetting her objective. D9002 was instructed to retrieve D9120 from the containment site and was indisposed by these symptoms at a notably slower rate. D9120 and D9002 were subsequently quarantined and remotely euthanized. Addendum 2 The following is the complete list of requests made by SCP-220 via phone. Granted requests and meals are supplied while SCP-220 is occupied with the daily ritual of walking five times around the building's lobby. Denied requests are communicated by a note of apology from the condominium's manager, citing the items unavailability. Requests made by SCP-220 while identifying as Ormond. Arthur Conan Doyle's The Adventures of Sherlock Holmes. Granted. A pair of silk house slippers. Granted. A French coffee press. Grinder. And coffee beans. Denied. Safety concerns. An electric kettle. Granted. A request that management post has opened invitation to a chess tournament for other guests to see. Denied. Denial phrased as best postponed until the busy season. Requests made by SCP-220 while identifying as Ollie. A picture of his wife. Granted. Although records indicate Ollie G was never married, assistant researcher Evans, with the permission of Dr. Hart, has supplied a photograph of her deceased grandmother. Tylenol PM. Granted. Dosage limited to two tablets. An address book. Granted. SCP-220 has been observed to write in this book frequently. A request for a call to be put through to his granddaughter. Denied. SCP-220 has no record of family. Denial phrased as number unavailable. A bicycle. Denied. A guide to birdwatching in Florida. Granted. A pair of binoculars. Granted. A chess set. Granted. SCP-220 has been recorded spending upwards of four hours engaged with the chess board, crossing back and forth to play each side. Lesson complete. If you missed the previous orientation, go watch SCP-219 Resonance Engine right now. Or for the complete course, watch this playlist.