The scene
Mirador Theatre · Box officeAt five in the afternoon, forty spectators find the Mirador Theatre closed. Their tickets say seven; the new poster on the door says five. Someone deliberately changed the time to ruin opening night.
Three people prepared poster proofs. Each insists their copy kept the correct time. The published file has disappeared, but the print on the door remains intact. Its small details may identify its source.
What we know for certain
One of these three people changed the time and put up the poster. They could only use their own template. The system allowed the time to be edited; everything else was locked. There were no shared accounts or accomplices. The records are reliable.
The three accounts
Ariadna Vela
Illustrator«I worked on the initial layout. I did not publish the wrong time.»
Samuel Costa
Front-of-house coordinator«My proof had the updated phone number. I checked every detail.»
Celia Roca
Press officer«My version already had the new emblem. The time was still seven.»
Examine the evidence
0 of 5 openedOpening these five clues does not cost points.
01The print on the door
The poster advertises 17:00. It has a small star below the title and a phone number ending in 42. It was printed by the system, with nothing added by hand.
02The first template
Ariadna received only the initial template: no star and a phone number ending in 42.
03The final template
Samuel received only the final version: a star and a phone number ending in 84.
04The intermediate proof
Celia received only an intermediate version: it already included the star, but still had the phone number ending in 42.
05One editable field
The audit confirms that all three templates originally said 19:00. The emblem, phone number and layout were locked. Each account could print only its own template.