The Iytean Menace

The player characters are assumed to be members of the Celestial Intervention Agency,[1] and are sent to London in 1885 to investigate who brought some advanced technology there, and ensure the Time Stream is not damaged.

[2] In addition to the adventure, the book contains background information on Victorian London, the alien race known as Iyteans, as well as a large section of advice for the gamemaster.

In the April 1986 edition of White Dwarf (Issue #76), Barry Bailey reviewed both The Lords of Destiny and The Iytean Menace, which had been released simultaneously, and called both of them "very accurate simulations of the kind of stories that have made Dr. Who a popular TV regular for over 20 years."

Bailey confessed that The Iytean Menace was "my favourite of the two [...] attractively illustrated with period woodcuts that enhance the carefully created Victorian atmosphere."

He also enjoyed the plot, which he called "challenging, but not too intricate, and manages to interweave a healthy dose of Robert Louis Stevenson into the proceedings quite adroitly."