Knock Knock: A Chilling British Crime Thriller (DCI Kett Crime Thrillers Book 10)

Alex Smith

Analysed85% confidencegpt-6-luna3 reference examples used

A hooded figure carrying a box stands before a bright blue door set in a brick arch, with iron railings, potted flowers and tiled steps around the entrance. The two large yellow sans-serif title lines read “KNOCK KNOCK”; the author name, “ALEX SMITH,” appears in large white capitals near the bottom. Smaller white copy sits above and below the title.

01 / Type system

Typography

Dominant typography color: Yellow
Title typography color: Yellow
Title size: Medium
Typography prominence: Moderate
Readability: High
Dominance in cover: Balanced
Title families (dominant first): Sans Serif
Title position: Upper Half
Case: Uppercase
Width: Regular
Typefaces: 2
Author prominence: High

02 / Estimated colours

Colour

#11100C · 27%Black · Dominant

#3B3020 · 21%Brown · Dominant

#0866D7 · 20%Blue · Dominant

#41642A · 10%Green · Accent

#9B4824 · 9%Red-Orange · Accent

#A69C80 · 6%Grey · Accent

#F2D900 · 4%Yellow · Accent

#F4F0E6 · 3%Cream · Accent

Brightness: Mixed
Contrast: High
Temperature: Mixed

03 / Visible subjects

Imagery & Mood

Primary style

Photography

Subjects

PersonCardboard BoxRed StainBlue DoorArched WindowBrick WallIron FenceFlowerPotted PlantFlowerpotBrick Step

Mood

OminousTenseAtmospheric

Visual tropes

Figure CoverBack-Turned Figure

People detected: 1 · Face visibility: Obscured

04 / Provenance retained

What We Know,
Without Interpretation.

SourceAmazon Bestsellers

Date addedOct 23, 2026

Ranking at the time of addition#75 · Noir Crime

IdentifierASIN B0B5LZX5BY