1. Child is between 7-12 years
2. Exposed to a potentially traumatizing event according to the DSM-5 A-criterion
3. Has a minimum of 5 symptoms of post-traumatic stress (1 symptom must be re-experiencing or avoidance)
4. ≥3 years at the time of the traumatic event to ensure an explicit memory of the event
5. ≥1 month since the traumatic event, according to the diagnostic criteria for PTSD
6. The child must confirm in a conversation alone with the therapist that they feel safe at home and together with the parent and that they are not exposed to ongoing trauma.

1. Suspicions of psychosis, active suicidality, serious intellectual disability, or lack of Norwegian skills to complete the workbook
2. A psychotropic medication regime that has not been stable for at least 4 weeks (2 weeks for stimulants/benzodiazepines)
3. Currently receives other trauma treatment.

Caregiver/family exclusion criteria for participation:

1. A caregiver that is the cause of the trauma exposure can neither be the caregiver that leads the treatment nor live in the same household as the child at the time of treatment
2. The caregiver has had a substance use disorder within the past 3 months, suspected suicidality or insufficient Norwegian language skills to complete the workbook/treatment without use of an interpreter.