Emergency departments are increasingly identified as the entry point to mental health services. In the hope of facilitating the flow of psychiatric patients through a general hospital's emergency department, experienced psychiatric nurses were asked to participate in a pilot project in a general hospital in Canada. This paper is a reflection of one emergency psychiatric nurse's (EPN) experience of her role being transformed into that of a gatekeeper. The notion of "gatekeeper" as a metaphor highlights "keeping psychiatric patients out" of an already strained emergency system. As a means to balance fiscal demands with patient care, the EPN inadvertently served to obscure entry for patients with mental illness who were seeking emergency services.