If Peter Grant working cases for the Folly—tracking the Mr. Punch–style revenant and negotiating with Beverley Brook and Mama/Father Thames—hooked you, you’ll love how Quill, Costain, Sefton, and Ross suddenly gain the Sight and form a covert unit inside the Met. They chase a centuries‑old witch tied to London’s football scene with proper surveillance, interviews, and evidence chains, all while learning the rules of an occult London that’s as bureaucratic and dangerous as anything Nightingale warned Peter about.

If Peter’s dry asides about vestigia and his scene‑of‑crime legwork with the Met (and that grisly Punch-and-Judy violence) kept you turning pages, you’ll click with Harry Dresden’s voice as he teams with Lt. Karrin Murphy to solve heart‑bursting murders caused by dark magic. Like Peter mixing forensics with spellcraft under Nightingale, Harry’s case ties a lethal new drug and a toad demon to a sorcerer pulling strings from the shadows.

If you grinned at Peter’s wisecracks while filing forms for the Folly, getting scolded by Nightingale, and still diving into a haunting tied to Mr. Punch, Bob Howard’s world will feel delightfully familiar. The Laundry is a secret UK agency where computational demonology and risk assessments collide; expect sardonic memos, eldritch math, and office politics that hit the same comedy‑meets‑occult sweet spot as Peter’s paperwork‑and‑poltergeists routine.

If Nightingale teaching Peter the limits of magic—Latin forms, practice, and caution—was a big draw, Lockwood shaping Lucy Carlyle into a sharper agent will scratch the same itch. Their investigation of Combe Carey Hall’s lethal haunting mirrors the Folly’s methodical approach: clear rules (iron, salt, and listening) and escalating stakes, like Peter’s painstaking, by‑the‑book pursuit of the violent spirit that left Lesley scarred.

If the territorial politics of Mama Thames vs. Father Thames—and Beverley Brook’s river‑spirit presence—enchanted you, Neverwhere’s London Below will feel like stepping deeper into that mythic map. Richard Mayhew’s journey with Door, the Marquis de Carabas, and the sinister duo Croup and Vandemar taps the same vein of London lore that Peter navigates when divine neighborhoods and old stories literally walk the streets.