This article explores occasions when professionals in law enforcement and medicine find themselves trapped amidst the paradoxical demands of diagnostic/investigative practice. By juxtaposing research into the experiences of police officers charged with interviewing children who are the alleged victims of sexual abuse, and clinicians tasked with diagnosing and managing contested cases of thyroid disease, the paper develops an understanding of such practice paradoxes as occasions of stalled transition, or liminal hotspots. Drawing on a process theoretical understanding of liminality, the analysis explores the personal, experiential, and affective efficacy of the epistemological framework that both practices share. While liminal hotspots denot...