The long-running sci-fi show "Doctor Who" returned almost two months back on Aug. 23, 2014 and is gradually moving close to its finale. But before that Peter Capaldi's Doctor has to fight few more battles and overcome few more challenges. Here are few spoilers from "Doctor Who" Series 8 Episode 10 "In the Forest of the Night." Read on to find out what happens next. [Warning: Spoilers alert!]

This article contains spoilers from "Doctor Who" Series 8 Episode 9 "Flatline" and 10 "In the Forest of the Night." Read only if you want to learn more about them.

Last week, fans saw Clara and the 12th Time Lord deal with a unique problem that caused their precious Tardis shrink to an unbelievably small size. Later they found out that their actual enemy is an alien from a two-dimensional universe, who were causing all the problems. Clara seeks help from an artist named Rigsy in order to restore Tardis' power and actual size. Clara assumes the role of a doctor for the mission.

During the episode, Missy makes a mysterious appearance. While the Doctor and Clara are talking about Clara's performance as a doctor, Missy seems to be looking at the two in what appears to be an iPad. At the end she utters some mysterious words about choosing Clara.

Moving on to the next episode, "Doctor Who" Series 8 Episode 10 "In the Forest of the Night," Peter Capaldi's Time Lord takes on a new adventure alongside his assistant Clara. BBC One has released a brief description of the upcoming segment teasing exciting spoilers.

According to the media report, Doctor Who has a strange case to solve when mankind faces the "most surprising invasion yet." On one morning, the entire world sees every land transformed into a forest with large trees and inhabited by dangerous animals. As the doctor starts to investigate the bizarre events, he finds out that human race is in danger of extinction.

Meanwhile the network has also released promo videos giving a glimpse at Episode 10. Click HERE and Here to view it. "In the Forest of the Night" was written by Frank Cottrell Boyce and directed by Sheree Folkson. One of the promo videos shows Danny Pink and some school children exploring the new world covered under dangerous forest.

"Doctor Who" Series 8 Episode 10 "In Forest of the Night" airs Oct. 25, 2014 on BBC.