There are some mysteries that can't be solved

A witty and cool modern art illustration depicting an absurd mystery investigation. A sleek, faceless detective in a geometric trench coat carefully follows a trail of stylized shoe prints on a minimal graphic ground. The trail forms an obvious, perfect geometric circle that leads directly back behind his own heels, looping endlessly. The tone is deadpan, sharp, and humorous. Color palette strictly monochromatic in charcoal gray, dark graphite, matte slate, and cool ash gray. Semi-flat 2.5D geometric styling with crisp chiseled shadows in tonal grays, minimal isometric perspective, Swiss graphic design influence, elegant and satirical, anti-photorealistic.