As excitement mounts for the new series, fans across the globe can catch a glimpse of what's to come for the Doctor and his Companion. The new episodes begin airing on BBC One on March 31st.  (All trailers contain spoilers, obviously.)

Trailer 1 (1:06)

Trailer 2 (0:40)

Trailer 3 (0:35)

Trailer 4 (0:08)

As a special bonus, the following is a fan-made trailer, which edits all the previous trailers together:

Fan Edited Trailer