Continuity mistake: When the two detectives exit the brownstone belonging to Miller their prime suspect, Miller walks up the sidewalk and starts to run when he sees the police. The detectives and one police officer take off down the stairs twice as they give chase.
Law & Order (1990)
1 mistake in Only the Lonely - chronological order
Det. Lennie Briscoe: Even though you are a taxpayer, you know, we don't actually work for you personally.
Trivia: Before his transfer to the NYPD, Joe Fontana (played by Dennis Farina) worked as a detective in Chicago. Before becoming an actor, Farina served in the Chicago police department, both as a police officer and a detective. Farina also played a Chicago police officer on the short-lived 1980s TV series Crime Story.
Question: I don't remember if it was this show or another L&O, but there was an episode where a reporter was overseas at a military encampment, reporting on a war. While there, he explains the military's plans by drawing them in the sand. Shortly later, the encampment is attacked. How could the enemy figure out where the encampment was? The reporter never said where the location was at, only what the soldiers were planning.