Doctor Who: Hannah's Guilt part two

On Deltarune 8 in the Selyion Galaxy, a man has been murdered. Luckily, Detective Tsitsipas has caught the killer red-handed, still holding the murder weapon as she stands over the corpse. But there's no way Hannah Adamson did this, is there? What can the Doctor do to protect his friend when all the evidence says that she's guilty?

A Snapshots From The Tardis episode.

This short story takes place between Who Wants to Live Forever? and Thorn of the Daleks.