Poirot mentions that he needs to protect Hastings from ladies with auburn hair.His adventure holidays - he can't stop talking about the caiman he shot.Poirot arranges his crockery in order of height.He straightens the ABC railguides on sale at Victoria Station.Tony Red Richards as Librarian (uncredited).Pat Gorman as Desk Sergeant (uncredited).David Fox as Scotland Yard Sergeant (as David Richard-Fox).Peter Penry-Jones as Superintendent Carter.Here, there is a chase scene in the De La Warr cinema and then Franklin is caught by Japp. Franklin is exposed in the same way but in the book he attempts to commit suicide with his gun but Poirot had managed to switch the bullets for blanks. The denouement in the book takes place at Poirot's house whereas here it is back to the De La Warr pavilion at Bexhill.Cust is simply committed for trial and Poirot interviews him. The entire sequence involving Dr Thompson, and the discussion about Cust's prosecution is omitted.He wanders for a while then collapses in front of the counter of a London police station. Cust comes back to London from Doncaster and finds police at the door of Mrs Marbury's. In the adaptation, the Lily and Tom characters are dropped and this sideplot omitted. Cust left the house and went to Andover where he falls down in the police station. But Lily Marbury as sympathetic to Cust and called to warn him that an inspector was coming to the house to interview him. Case or Cash and thought it might refer to Lily's mother's guest. They saw a police appeal for information on one A. In the book, Lily Marbury and Tom Hartigan play a significant role in getting the police onto the trail of Cust.The body is discovered by Mr Downes but there is no suggestion that he might have been the intended victim. The murder victim at Doncaster was not identified, so the entire discussion about the victim's name not starting with 'D' is absent.

In the adaptation, he left it under the bed at the Globe in Doncaster. Also in the book, Cust brought the knife back to Mrs Marbury's house and hid it behind the hall stand. At Doncaster, Cust does not stay at the Black Swan but at the Globe.Inspector Glen and Superintendent Carter appear but not Crome, Kelsey and others.

Minor characters are dropped especially among the policemen.

The dates of the murders are thus all changed from what is in the original book.

The murders are committed within a few days of each other.

Other than a few changes for dramatic reasons, the adaptation is fairly faithful to the original novel.

The A.B.C. Murders by Agatha Christie