Four Doctors (comic story)

Four Doctors was a miniseries published by Titan Comics. It served as a three-way crossover between Titan's ongoing series Doctor Who: The Twelfth Doctor, Doctor Who: The Eleventh Doctor and Doctor Who: The Tenth Doctor, uniting the three Doctors and their companions, as well as marking the Titan Comics debut of the War Doctor.

Summary
What shocking past event brings three Doctors together — to combat an unknown foe with three incarnations in its sights?

Issues

 * FD 1
 * FD 2
 * FD 3