David Bradley reprises his role as the First Doctor for this special lockdown adventure.
Get involved by using the hashtag #FearIsASuperpower.
Do-It-Yourself sonic screwdrivers, for fans of all eras!
Use the hashtag #VolcanoDay to take part on Twitter.
Feeling trapped? Then you’ve got something in common with a certain Time Lord…
Harness pitched How the Monk Got His Habit, in which the meddler visits Russia in 1917.
Use the hashtag #TruthOrConsequences from 7:15pm (BST) tonight.
Matt Lucas sings a duet of Thank You Baked Potato with Pearl Mackie.
Capaldi starred in two Doctor Who serials by Cottrell Boyce: In the Forest of the Night and Smile.
An incredible array of Doctors will be taking part in the BBC charity show, The Big Night In this evening.