The two Bishop's Pawns of the Black house are Twins, named Tethen (b. 1865, file f) and Ratchine (b. 1868, file c) Farrell. Like all Twins, they possess a psychic link that takes the form of a straight line of energy between their pawny little heads. The link is sharp as razorwire, and changes colour depending on their moods. All pieces contacted by the thinkbeam are instantly lacerated.
It is advisable that the White family endeavour to dispatch at least one of the Twins as soon as possible, or trick them into destroying their own monarch.