This teaching video, produced by the University of Nottingham, shows a real psychiatrist conducting an on-call assessment of a young man urgently referred by his GP (the patient is played by an actor; no real names or personal details are used). Over the course of the assessment, the psychiatrist elicits classic psychotic symptoms — persecutory delusions, third-person auditory hallucinations, running commentary, thought insertion, and somatic hallucinations — directly illustrating the concepts covered in this unit’s Core Reading. She then conducts a risk and drug history assessment. The most likely diagnosis is schizophrenia, with drug-induced psychosis as a key differential.