Recap: Star Trek Deep Space Nine S 07 E 13 Field Of Fire

A serial killer has appeared on the station, and he seems to be using chemically-propelled projectiles, aka bullets, to murder his victims. Ezri is put in charge of the investigation, but she can't make heads or tails of the case. It takes a killer to catch a killer, so Ezri is forced to recall the deranged psyche of Joran from the depths of the Dax symbiont. With Joran's help, Ezri starts to find clues, but at the cost of her own psychological stability. . .and the killer is already working on finding his next target.

Tropes in this episode:

  • Abnormal Ammo: Zigzagged Trope. In the 24th century, with phasers and disruptors the weapons of choice, bullets are abnormal ammo!
  • Cold Sniper: They don't get much colder than a dispassionate Vulcan.
  • Enemy Mine: The situation forces Ezri to seek the assistance of Joran.
  • Eureka Moment:
    • O'Brien figuring out how the killer enhanced the rifle to kill from across the station.
    • Ezri realizing that all three victims had pictures of smiling faces in their quarters, and another one when she deduces that the killer is a Vulcan.
  • I Call It "Vera": When O'Brien hears about old frontiersmen doing this with their rifles, he jokes about calling his tricorder "Sally."
  • If You Kill Him, You Will Be Just Like Him: Ezri is faced with this once she comes face-to-face with the killer. She chooses not to.
  • Improbable Weapon User: The killer seems to be using a transporter-assisted sniper rifle, which is like someone today putting a silencer on a musket.
  • Journey to the Center of the Mind: The Joran/nightmare scenes
  • Locked Room Mystery: Lieutenant Junior Grade Ilario, victim number one, was in his quarters with the door locked when he was shot, and the station computer recorded no entry other than him. When you've got a bullet-teleporting sniper rifle, you can do that kind of thing.
  • Noodle Incident: Whatever happened at that bar on Bolarus involving a younger Sisko.
  • Offscreen Moment of Awesome: Ilario's combat piloting (the reason he's being toasted) occurred before the episode starts.
  • Parting Words Regret: When Lieutenant Ilario asks to join Bashir and O'Brien in the Alamo program, they told him he can't. After he's found dead, they regret not letting him play with them.
  • Red Herring: Ensign Bertram accessed the replicator pattern for the TR-116 rifle, and when we see him he's being chased by security. Turns out he just collects weapons as a hobby and was on Bajor when the murders occurred.
  • Shell-Shocked Veteran: Chu'lak was one of only six survivors of the U.S.S. Grissom when it was destroyed.
  • Sniper Duel: The episode culminates with one between Ezri and the murderer.
  • What the Hell, Hero?: Sisko gives Ezri one when she almost stabs the guy she thinks is the murderer.