Coronation Street's Adam Barlow has been suffering at the hands of a creepy stalker - and in Wednesday's double bill their identity was finally revealed to viewers.
Solicitor Adam was shocked to discover that his car windscreen had been smashed, assuming that a disgruntled former client Jeremy Bremner was behind the vandalism.
Police stormed Adam and Imran Habeeb's office after receiving a tip-off that there was a firearm on the premises.
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And while Adam received anonymous phone calls his wife Sarah found a bouquet of flowers sent with a menacing card reading "next bouquet will be for your funeral."
As the silent calls continued, and Adam was still insisting that Jeremy is behind them, the camera cut to newcomer Lydia Chambers sitting in the car in the pouring rain with a mobile phone.
While some viewers had already worked out that Lydia was behind the harassment campaign, others reacted in shock and demanded to know why she was stalking him.
@Cutey69947290 tweeted: "No I need to know WHY LYDIA?"
@CHG3899 said: "Wasn’t expecting that!"
And @dazman007 asked: "What have I missed, why would Lydia stalk Adam?"
Lydia arrived in Weatherfield in December as the PA to one of Sarah Barlow's clients at the Underworld factory.
Lydia, played by Rebecca Ryan, and Sarah, played by Tina O'Brien, hit it off immediately.
However it soon became clear that Adam and Lydia already knew each other.
When Adam asked if he had recognised her face because he had handled her divorce Lydia replied mysteriously that her last serious relationship was at uni.
Lydia admitted she and Adam had a relationship in the past.
And he was forced to confess to Sarah was at university years ago and he could barely remember it.
Sarah wasn't impressed but she continued to see Lydia, who went on to date Daniel Osbourne.
Now it's clear she has a vendetta against Adam and viewers think they've worked out he might have a secret son with his ex.
They recalled that Lydia has a boy called Finn who she introduced at the Christmas market.
@VampLover27 tweeted: "So she’s the one, just wait until she says he’s the father of her son too."
@Bajan20101 said: "Bet her child his!"
@michellepryde tweeted: "So Lydia’s son is going to turn out to be Adam’s isn’t he?"
And @orlar35 asked: "Is Adam the father of Lydia's son ????#Corrie"