Obsessive-compulsive disorder, or OCD, is a mental health condition that manifests in repetitive, ritualistic behaviors or compulsions that alleviate intrusive thoughts. While everyone experiences intrusive thoughts intermittently, OCD is characterized by intense, frequent bouts of unwanted thoughts that disrupt daily function and quality of life. There are four subsets of OCD: contamination, order, doubt, and aggression. Individuals with Order OCD have an intense desire for symmetry, order, and control. They may arrange objects in a precise order, count items or steps excessively, or adhere to strict regimens. Any disruptions to their orderly world can cause significant anxiety and anguish, and they may be unable to leave the house unless everything is in perfect order. In Talking at Night, the protagonist Rosie deals with Order and Doubt OCD. She obsessively counts steps, arranges her room in a specific order, ritualistically touches items repeatedly, “checking” behaviors. Although Rosie’s checking briefly alleviates her anxiety, the respite is fleeting, and obsessive thoughts quickly return, creating a vicious cycle resulting in hours spent practicing these actions every day. Rosie becomes locked in a cycle of compulsions, limiting her capacity to engage in typical activities like sleeping and participating in social activities.