Is Roy Grace From Not Dead Enough A Real Person? ITV Character And Show Ending Explained

Here is an explanation of the ending of the episode Not Dead Enough. Please be warned, that this contains spoilers of the episode, which is mandatory.
Not Dead Enough sees Grace and Branson investigate the murder of a wealthy socialite and patron of local charities, Katya Bishop, wife of a prominent entrepreneur Kit Bishop, who becomes the main suspect of the investigation.
Get ready… GRACE "NOT DEAD ENOUGH"
Tonight 8pm ITV
Sunday's 📺 just got a lil bit darker….💫💫#Grace #peterjames #johnsimm #richiecampbell #crimedrama #itv pic.twitter.com/qvbUCAxMJb
— Richie Campbell (@richkidcampbell) May 1, 2022
The Bishops seem to have led a charming life until Grace digs deeper behind the respectable facade and discovers all is not what it seems. However, doing so places him unknowingly in grave danger.
Kit seemingly had an affair with a young woman named Sophie Carrington and slept with her the night before his wife’s body was found. After Sophie is found dead in similar circumstances to Katya, Bishop’s violent criminal records are discovered. He seems to have been in multiple places at once.
It was revealed that Bishop was actually one of a set of identical triplets. One of the triplets died and Kit was adopted by a wealthy family and lives a lavish lifestyle full of privilege. The third, Norman Jecks, was taken by an abusive guardian.
Jecks has been an imposter and had taken Bishop’s place for some time. He was the one that slept with Sophie. He murdered the women in order to punish his brother, whose legal team had threatened him if he ever came close to him or try to contact him.
Grace finally catches Jecks and brings him to justice.
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