Teen reviewer Scout on Maureen Johnson’s Truly Devious series and the new title The Velvet Knife

Scout, a teen reviewer who aspires to be a death investigator, read every book in Maureen Johnson's Truly Devious series and an advance reader copy of the latest standalone, The Velvet Knife. Scout's comments focus on the series' combination of fresh murders, unresolved cold cases, and a protagonist who is an active, capable teenage detective.

Scout says the series hooks readers with its characters and escalating questions. Each installment introduces a new murder or case while building on existing mysteries. Scout highlights the subplot romance alongside the investigative elements and describes the lead, Stevie Bell, as a "badass teenage girl" who refuses to be underestimated.

Scout finds the books immersive: she felt like a detective while reading and appreciated how the series layers puzzles across titles. Those two elements—ongoing cold-case threads plus new standalone mysteries—are presented as the series' central appeal.

The Velvet Knife — publisher description and Scout's response

York to solve a murder. The book frames Stevie as possibly the greatest teenage detective Ellingham Academy has produced, while also exploring confusion around her boyfriend, David. The new murder appears in a Manhattan apartment complex and raises questions about trust, manipulation, and whether people recognize harmful group dynamics before it's too late.

Scout's reaction: She calls The Velvet Knife a page-turner that kept her unable to put the book down. Scout emphasizes the book's constant questions and a surprising plot twist at the end. She also notes that the romantic subplot kept her entertained and that the book balances relationship issues with crime-solving.

• Readers who like YA mysteries with a strong teen sleuth and recurring cast.
• Readers who prefer plots that combine cold-case arcs with new crimes in each book.

Expect a standalone mystery that still connects to Stevie Bell's ongoing story, with a central murder in New York and interpersonal confusion that complicates the investigation. The publisher's blurb frames the novel around questions of trust and manipulation, and Scout points to a notable twist at the end.

If you enjoy layered YA mysteries that move quickly and include interpersonal drama, start the Truly Devious books in order to follow the recurring cold-case threads, then read The Velvet Knife for a New York–set standalone that continues Stevie Bell's arc.