When Alan enters his car the driver's window is up but a moment later is down.
During the close-up of the charms at the beginning of the show, Mr. Richards is wearing black studs in his shirt. During the rest of the scene, his shirt is fastened with standard buttons.
In the sequence where Alan gets out of the stalled cab and then meets the tramp, the shadow of the camera crane (used in an earlier shot) is clearly visible against the wall of the building across the square.
The Kikuyu tribe live in central Kenya whereas the Koloka River is in modern-day DRC.
The primary, haunting sound that Alan hears as he's walking the street in the dark is the sound of the Kookaburra, a "laughing" bird that is native to Australia and found nowhere on the African continent from which he has recently returned.