'Grace' finale grips viewers' attention

Viewers took to social media to express their reaction to gripping ITV's detective drama Grace's third season finale.

The fans of the series revealed their reactions on Twitter.

"This series of #Grace on @ITV was brilliant! Somehow manages to go from strength to strength," one person tweeted.

While another commented, "Brilliant storyline. Outstanding cast. Enjoyed every episode of series three, #Grace. Come back soon. Sunday night won't be the same without you. Series four @itv soon, please."

One user heaped praise on author Peter James, the author whose work inspired the series.

"@peterjamesuk @ITV Brilliant series once again, and plenty left for the next! Skilfully rewritten for TV and thoroughly enjoyable. Thank you!"

On the other hand, several fans also sang praises of John Simm's performance.

"Grace is brilliant. I hope we get more series in the future. Fantastic show, and John Simm is just a brilliant actor," one said.

While another added, "Very clever writing, John Simm is excellent."

The show depicts dedicated detective Roy Grace (John Simm) in Brighton, grieved by his wife's disappearance, who investigates horrible crimes for the East Sussex police.