I read
the manual closer and I consider this full completion. It just happens that for this game full completion is a separate case:
CASE 5: "The Big Sweep"
Touche would take a new approach. Rather than gather the evidence case by
case and prosecute Le Fiend four times, he decided to take everything on
at once. The whole city, the entire gang, all the cases and, of course,
Le Fiend. He rose early that day and took a deep, invigorating breath.
"Room service," he said into the phone, "please send up breakfast. What
is today's special?" The voice on the other end replied, "French toast."
PROSECUTION REQUIREMENTS: All of the stolen goods and evidence in cases
1-4 must be found and returned for verification
at their place of origin. Le Fiend may then be
rounded up and booked at Police Headquarters
once -- and for all.
STATUTE OF LIMITATIONS: 20 minutes
LOCALE: Entire city, 248 blocks