The cash left upon the table is not there when the Inspector looks at the table.
The double headed serpent is an Aztec sculpture not Mayan.
Spelling mistakes in in-game text.
The restroom in the diner is a unisex restroom, but does not have a lockable door, so anyone can just walk in.
The game is set in 2009 and the main character is a young man, but in his flashback scenes to his childhood, the soldiers are dressed in 1940s-era uniforms and equipment.
Lieutenant Valenti calls herself an inspector. Inspector is a rank much higher than lieutenant in the N.Y.P.D.