Slough House

The cicada network

Definition

“Cicadas” is the word left unsent on Richard Bough’s phone, and the name the book gives to a network of Soviet sleepers planted in Britain and left dormant, supposedly answering to the spymaster Alexander Popov. The Popov legend came with a biography: the closed town ZT/53235 in Georgia, a plutonium accident, a survivor who rose from the flames. The Service spent the Cold War chasing a man who was never there.

The twist Dead Lions builds is that the fabrication covers a real thing. Popov was invented — but a network was genuinely planted, and Nikolai Katinsky, the cipher clerk who invented Popov, built the legend out of his own past in ZT/53235 and then buried himself in Upshott among the sleepers he had parked there.

Book 2 — Dead Lions

Why it matters

The network lets the book argue about the Cold War’s afterlife without nostalgia. The sleepers are real, but the threat has decayed into parish life; the only person still fighting the war is a dying man with a grudge and a cancer he cannot treat. It also gives the series its model of the fabricated legend that turns out to be true in exactly the wrong way — and of an institution that cannot tell the difference between a story it invented and a danger it created.

Open questions

How much of the network Moscow Centre knew about after 1991; whether any cicada is still armed and still has a target; and whether “cicadas” was a warning, a summons, or a man’s private joke at the Service’s expense.

Book 2