WARNING! This article contains massive spoilers. Do not read on if you haven't seen the series finale of 'Marcella'.
'Marcella' fans were left on the edge of their seats on Tuesday (17 May) night, as ITV's crime-noir drama reached its gripping conclusion.
The identity of the serial killer was finally uncovered, as DS Marcella Backland (Anna Friel) finally cracked the case during the tense finale.
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Anna Friel starred as DS Marcella Backland
ITV
The shock scenes saw Henry Gibson revealed as the culprit, after he took best friend Matthew Neil hostage in his wine cellar, in an attempt to frame him for his crimes.
After Marcella arrived at Henry's house to find he had also stabbed her husband Jason, he admitted to the killings.
But in a shock twist, Marcella had another of her blackouts, and came round to find she had tied him up and tried to suffocate him with a bag over his head.
After realising what she had done, she gave him resuscitation, but her actions had compromised the police investigation, forcing her to find alternative evidence to hold him accountable for his crimes.
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Henry Gibson was revealed as the killer
ITV
After finding bite marks on his shoulder, she was able to pin the kidnap of May Wier on him.
However, that was not the end of Marcella's troubles, as Detective Williamson's investigation of Andrew Barnes' murder uncovered the fact she had doctored the CCTV footage outside Grace Gibson's house, which revealed Marcella had moved her body.
The twists and turns set Twitter into a frenzy, with users praising the drama:
However, some failed to keep up with the many twists the final episode took:
Many were also desperate to know the answers to some of the questions they sill had:
There has been speculation there show could return for a second series, which would also help tie up the loose ends left over from the finale.