Cal is seen wearing a Claret and Blue scarf, the colours of West Ham United - an English soccer team who Ray Winstone, a close personal friend of Tim Roth's, is an avid fan of.
Last appearance of Jennifer Beals as Zoe Landau, Lightman's ex-wife and Emily's mother. She will be mentioned throughout the rest of the series.
This episode featured six cast members from The Shield (2002): Benito Martinez, Catherine Dent, Cathy Cahlin Ryan, David Rees Snell, Kenny Johnson, and David Marciano. Shield creator Shawn Ryan is one of Lie to Me's executive producers.
When Lightman and Reynolds visit the photographer, the photo editing software shown on the computer screens is an early version of Adobe's (then newish) photo asset management and editing software called Lightroom. The software challenged Apple's pro editing software Aperture and eventually became the standard digital photo management software for amateur and professional photographers.
After the fight with Kevin (David Rees Snell), Cal's left ear is heavily bandaged. Tim Roth played Vincent van Gogh in "Vincent & Theo"; Vincent van Gogh is known for cutting off his left ear and in his self-portrait his left ear/head is heavily bandaged.