Bill (played by Pearl Mackie) takes aim at the Doctor (Peter Capaldi) which hints at an early regeneration for the character, following Capaldi’s exit announcement.
The snappy teaser shows the Doctor in hiding while delivering video news reports from the very same room we later see him regenerating in.
New companion Bill will try to end mass public delusion that the evil Monks have inflicted by “killing” the Doctor to spare the human race.
One viewer tweeted: “Next week definitely looks interesting! Yes, knew that wasn't the last we'd be seeing of Missy! And the ending shot. WHAT?!! #DoctorWho.”
Doctor Who season 10: SHOCK as fans fear companion Bill has KILLED the Doctor
Doctor Who spoiler: Does Bill shoot and kill the Doctor?
Doctor Who spoiler: Will the Doctor regenerate after Bill fires the gun?
Oh my goodness. I can't wait for next week and on the trailer the Doctor gets shot! Regeneration?
Doctor Who viewer
“And The Doctor will be shot to death next week. Could that mean: REGENERATION TIME? 19:35 #DoctorWho,” posted another.
A third quizzed: “But it's weird because wouldn't he normally get shot in the finale? #DoctorWho,” as a fourth added: “Oh my goodness. I can't wait for next week and on the trailer the Doctor gets shot! Regeneration?”
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Other fans of the show were quick to judge Bill for seemingly shooting the Doctor after making a decision during tonight’s episode that the whole of humanity depended on.
One raged: “No no, don't you dare Bill, NO. #doctorwho #omg They've got to still be in a simulation, right?! RIGHT?!”
Doctor Who series 10: Episode guide Tue, April 18, 2017
Doctor Who series 10: A Complete episode guide for Peter Capaldi's last series as The Doctor.
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Doctor Who series 10 episode guide
“#DoctorWho BILL SHOT THE DOCTOR AT THE END OF THE TRAILER I’M DYING,” posted another,” as a third asked: “Oh, Bill! What have you done?! #DoctorWho.”
A fourth said: “Next Saturday on BBC One… 'The Lie of the Land'. Will Bill shoot her best friend? #DoctorWho.”
Missy (Michelle Gomez) can also be seen in the trailer. Could she have anything to do with the Doctor’s regeneration?