This series of three articles presents the evolutions of (1) the clinical activities of psychiatric liaison, illustrated by the PENbank project, (2) the training provided by psychiatric liaison clinicians, described by a recently developed clinician-centered supervision, and (3) research in psychiatric liaison, exemplified by four studies. Because it goes beyond traditional types of liaison interventions for clinicians, the PENbank may be considered a meta-liaison project. Indeed, the PENbank is an infrastructure (a data bank), which allows to collect, store on a long-term basis, and use physicians' narratives of experiences.