Among the more reliable sources of anxiety, conflict and drama in fiction are the family, the battlefield and the hospital—“Berlin ER” being a combination of the three, with a bonus dose of dysfunction. At the emergency room of the fictional Krankenhaus, for instance, there are just two crack trauma surgeons. One is as angry as a boil; the other is a recidivist junkie. It is a miracle they save others, since they can barely save themselves...