Britain's Duchess of Sussex is facing the prospect of facing her own father in court, over the publication of a letter she sent to him.
Thomas Markle could testify against Meghan in her legal battle with The Mail on Sunday.
High Court documents show he forms part of the defence.
Sky's royal correspondent Rhiannon Mills says the newspaper will also argue their royal positions justified the publication
File image: Meghan Markle/RollingNews