Missy takes the Monk to Earth to make a point – she can be nice if she wants. In fact, she can save the planet! While the Monk tries to charm the corporate sharks, Missy makes them a better offer. To supply the ultimate warrior, created in the ultimate war...
The Seed was found drifting in Arkansas. The Seed was "acquired" by a certain expert institution and later sold to Temple.
The Master created the Seed - a War Seed - by using her own DNA. She made more than one. Due to her DNA being present, the War Seed's face keeps changing between the Master's faces. A War Seed embeds itself into a society and turns the populace into soldiers that answer to the Time Lords.
Missy suggests that if Temple returns her son, she will offer him the army left behind.
In a state of panic, Murph regenerates (or degenerates) into a monster resembling a cheetah-humanhybrid. The Monk contemplates whether this regeneration was based on pure survival.
The Seed could see somewhat into the future, knowing that Brad was going to die. He was also able to sense his brothers.
On a previously seeded planet, the bloomed War Seed had transformed the Cheetle populace into weapons.
The War Seeds have TARDIS DNA woven through him, allowing them to dematerialise on the spot.
Temple states that he acquired the Seed in 1985 and has had him for 35 years, placing this story in 2020.
Notes
to be added
Continuity
The Monk is still furious at Missy having removed his brain and throwing it into a ravine in their last adventure. (AUDIO: Body and Soulless)
Missy reminds the Monk that while she fought in the Time War, the Monk fled. She thinks that this means he had no right to an opinion. (AUDIO: Divorced, Beheaded, Regenerated et al)
Richard Temple revels at the inner dimensions of the Monk's TARDIS. Missy previously stated that humans' surprise at the dimensions bored her the most. (AUDIO: Too Many Masters)
Missy mockingly begs the Monk to let her keep the Temples as her companions. She mentions the resemblance to the Doctor and his "squeaky" companions. (TV: An Unearthly Child et al)
Once again, the Monk underestimates Missy's plan. He had previously lied to the Kalvor and the Monk about the Monk's purpose in the destruction of the VAD. (AUDIO: Body and Soulless)
The Monk has finally had enough of Missy's torturing of others. He asks her to leave. Surprisingly, a previous incarnation of the Monk manipulated the Eighth Doctor's timeline so that he could not reach his companion Lucie Miller in time. This lead to her becoming trapped in a Dalek War, becoming severely disabled before her giving up her life. His part in Lucie's death causes the Doctor to enter a deep depression. (AUDIO: Lucie Miller, To the Death)
Upon their next meeting, now in his moustachioed form, the Monk tells the Eighth Doctor that upon every regeneration, he repents his sins and forgives himself, enabling him to start afresh. The Doctor refuses to accept such a denial of murder. (AUDIO: The Side of the Angels)