The Drowning viewers were left caught up in the show's storyline as the penultimate episode aired on Wednesday night.
The new Channel 5 drama, which has had people hooked since Monday night, follows grief-stricken mother Jodie who is consumed by the hope her missing son could still be alive.
Over the last three nights, viewers have been on a rollercoaster with Jodie who is determined that schoolboy Daniel is in fact her son Tom who disappeared nine years ago.
If you haven't seen episode three, look away now as there may be spoilers ahead.
Last night's third episode of the four-part drama ended on a bit of a cliffhanger as Jodie found out Daniel is her son Tom following a DNA test.
However, not everyone is convinced that this is legitimate after Jodie's brother Jason, played by Jonas Armstrong, was seen making a phone call for a 'favour'.
So, fans have been dishing out their own theories on Twitter.
"Could the DNA be faked? I don’t know why but it just felt a bit fixed especially as Daniel looks like neither of his parents. Even Ben saw him and wasn't exactly won over that Daniel was Tom #TheDrowning," one wrote.
Another said: "Brother will have switched DNA, next episode showed her calling ‘Daniel’ not Tom... #TheDrowning."
"Ben's new wife didn't want Daniel In their lives so arranged someone to kidnap him... surely I'm right... #TheDrowning," a third has predicted.
A fourth asked: "#TheDrowning is there a sub plot about the disappearance of Daniel's mother??"
"Is the lawyer brother around 14 years older than Jodie and he is the son not Daniel? She is imagining a son from when they were kids? My mums theory of it after what he just said to their mum. I thought my theory was far-fetched!" another said.
There's just one episode left on Thursday night where we'll find out. Any more guesses?
