In this book, we have described how organisational and clinician practices and roles in emergency departments manifest in particular communication patterns and interactive styles between clinicians and patients. The central figure throughout the book is the patient, and the central question we have asked is: How does communication in emergency departments affect both the quality and safety of the patient experience?But we have also focused on the clinicians. We have described the intense pressure they work under-a result of insufficient funding to emergency departments, rising patient loads, bed block, patients presenting with multiple morbidities, and increasing linguistic and cultural diversity. In such high-stress contexts, inadequate communication has been shown to be a major source of unsafe situations.Our onsite recordings demonstrated vulnerable points in clinician-patient interactions, which we have called 'potential risk points' (PRP). We have argued that these have the potential to jeopardise patient safety. If communication is effective, it can also be the best way of controlling potential risks.As we have shown, communication, whether spoken, gestured, written, or electronic, underpins what is done in the emergency department. From handovers to taking blood, giving medication, talking to patients, listening to colleagues, reading computer screens, or doing resuscitations, clinicians are constantly speaking, listening, reading, and writing. The ways in which the communicative, social, and clinical practices work together in the complex context of the emergency department define the overall quality of the experience for patients and the ultimate work satisfaction of clinicians.We have found that both the quality of patient care and the patient's experience of that care are negatively affected by two interlinking factors: