Henrik Love Hanssen (né Lövborg) is a consultant general surgeon who works at Holby City Hospital. He joined the hospital in October 2010 as the new joint Director of Surgery, serving alongside cardiothoracic surgeon Connie Beauchamp.
On 5 December 2017, Hanssen oversaw the transfer of the equipment of the eminent neurosurgeon and close friend John Gaskell to a basement-level wet laboratory after appointing him as the hospital's Director of Surgical Innovation. (HC: "Group Animal - Part One") Later in the day, after Gaskell introduced Hanssen, Sacha and Essie to Laszlo Furz, whose motor neuron disease he claimed to have cured, they were informed of a power outage and a gunman on AAU, and Hanssen ordered for the hospital to be put on lockdown. Outside the lab, the medics discovered that Jac had been shot in the back, and they were forced to use basic equipment to treat her. Despite Sacha's objections, Hanssen supported Gaskell's suggestion of using a haemostatic patch to fix one of Jac's major blood vessels.
As Hanssen attempted to have equipment delivered to the basement, Gaskell informed Hanssen that Fredrik had been identified as the shooter. Determined to stop his son, Hanssen left his colleagues and proceeded to search for Fredrik. On Darwin, Hanssen was horrified to discover that Fredrik had shot Ollie in the head as he was operating on David, and Roxanna urged him to stop Fredrik before he could harm anyone else.
On Keller, Hanssen managed to prevent Fredrik from breaking into the theatre room where the ward's occupants were hiding and confronted him. Once an armed police unit arrived at the scene, Hanssen attempted to negotiate with his son, but Fredrik asserted that he did not want anything from him anymore and loudly declared that he would decide how the situation ended. As the two began sizing each other up, with Fredrik asserting that Hanssen was not a part of the hospital's "family" and proclaiming that he was there to "end it", the police shot Fredrik in the chest, instantly killing him. A hysterical Hanssen, desperate to save his son, rushed Fredrik into theatre and demanded the lifts be turned back on, but he eventually realised that Fredrik was dead and wept. (HC: "Group Animal - Part Two")