Where is 'Pursuit to Algiers' - sole film missing from Rathbone series

[DrrnHarr]

Bravo to Paramount for giving us almost the entire Basil Rathbone Sherlock Holmes series on digital media.

My question is this - where is 1945s "Pursuit to Algiers"?

Appearing in the series after "The Woman in Green" and before "Terror By Night" (both of which are available on digital media) the October 1945 12th entry in the Rathbone series 'Pursuit to Algiers" is inexplicably missing.

Taking characters and events from the 1911 Sir Arthur Conan Doyle story "The Adventure of the Red Circle" and including references to Conan Doyle's 1903 story "The Adventure of the Norwood Builder" and Conan Doyle's 1924 story "The Adventure of the Sussex Vampire" Wikipedia details this movies plot thus:
"Following the assassination of King Stephan of Rovinia, Holmes and Watson are engaged by that country's Prime Minister to assist with the passage of Prince Nikolas of Rovinia from his school in Britain to Algiers, where Rovianian agents can take him the rest of the way.
The first stage of the journey is supposed to be for Holmes, Watson and the Prince to travel by airplane, but when they arrive at the airfield, their plane has been swapped for a smaller version and Watson is unable to travel with them.
Holmes instructs him to act as a decoy by travelling by liner. On board Watson hears the news that Holmes's plane has crashed and he believes Holmes dead; shortly afterwards he treats one of the passengers who reveals himself to be Holmes, travelling with the prince.
A number of the passengers are suspicious, including a singer, Sheila Woodbury, who Holmes deduces is carrying the recently stolen Duchess of Brookdale's emeralds.

[Show spoiler]When the liner docks in Lisbon, it is joined by three men, who try to kill Holmes and abduct the Prince, but Holmes foils all their attempts. When the ship docks at Alexandria the men surprise Holmes, tying him up and abducting the prince.
When Holmes is discovered by Watson and the Prime Minister of Rovinia, he informs them that the prince had been acting as their steward for the journey, and that the men had abducted an imposter he had put in place: he had also arranged for the local police to arrest the trio when they disembarked.

"
Ref Basil Rathbone Sherlock Holmes film series

Thankfully the film is available on DVD and Blu-Ray (as part of the Sherlock Holmes: The Complete Collection") so its omission in the digital series is puzzling?!