The Best Episodes Written By Trey Callaway

In the culmination of a multi-episode mystery, Mac and his team uncover the dark lair of a murderous madman, the Compass Killer. But as they race to save his fourth victim, the sunrise presents one final surprise that no one ever expected.

As the unexpected arctic cold front and ice storm continues to cause havoc in Austin, Owen works to rescue the lives of the stranded migrants; T.K.'s life hangs in the balance and Grace prepares for the birth of her baby.

The team is forced to investigate two crimes at once when a mysterious energy field seems to be the cause of a billionaire's disappearance and the death of his limo driver.

Owen and the 126 race to emergencies at a fast food drive-thru, a high school wrestling match and a case of road rage - all with one common element tying them together. Meanwhile, Tommy's estranged brother-in-law makes a surprise appearance in Austin, and Marjan confronts Capt. Strand about his anger management issues.

Danny is devastated when a young boy he knows is killed in the midst of a bodega robbery. Meanwhile, Lindsay, Stella and Flack investigate the death of a man killed by an exploding cigar that is connected to a joke shop proprietor and another tragedy that occurred years before.

A series of deaths from radiation poisoning may be related to a deadly tome in the New York library.

As the search for the taxi cab killer continues riding a cab gets very deadly. The team must figure out how to keep New York City safe. Also Danny, Lindsey, and Flack investigate the murder of a man who made a half court shot during a game that both Danny and Flack were attending.

It's St. Patrick's day, and all of New York City is ablaze with a hundred shades of green -- except for an abandoned warehouse in Brooklyn, where two corpses have left a tiny part of the city drenched in red...

When a Native American chief is shot on the subway, the CSIs struggle to translate which one of the several foreign suspects may have caused his death.

A battle between the Messengers and the Four Horsemen takes place as the Horsemen try to break the fifth seal in the series finale.

Sam and Dean investigate the case of a maniacal ghost inhabiting a long abandoned Texas farmhouse known as "Hell House." They believe the ghost is the spirit of a deceased Depression-era farmer who killed his family, but they soon realize it is something far more powerful.

Drawn together by destiny, Vera, Erin, Joshua, Raul and Peter convene together where they meet the mysterious Rose. Rose reveals that they are angels and their mission is to find and stop the Four Horsemen of the Apocalypse from bringing about the Rapture. Meanwhile, The Man’s real identity is revealed and he continues to tempt Vera with clues about her missing son.

As Charlie, Rachel and Gene question Monroe's true allegiance, Miles himself is weary of his former friend's intentions. Meanwhile, Aaron continues to have visions that lead to endless questions.

Truman, empowered with new authority from the President, launches a mustard gas attack designed to kill Miles and Monroe. To Rachel's disappointment, Miles agrees to join Monroe in a ruthless plot to beat the Patriots at their own game. As Neville faces his own challenge from the Patriots, Aaron grows increasingly alarmed by the power of the nanotech.

Is it possible to solve a murder 24 hours before it happens? Mac wonders if the suspect traveled through time to know about the murder in advance.

Monroe, Charlie and Connor make their way back to Willoughby, where they find that the Patriots' reeducation center is up and running. An encounter with two of the center's young cadets leaves Rachel and Miles divided on the lengths they are willing to go in order to take down the Patriots. As Neville and Jason find a new ally for their mission, more about the history of the Patriots is revealed.

Monroe leads Connor and Charlie on a risky mission, as Miles and Rachel keep an eye on things in Willoughby. Meanwhile, Neville gets a new assignment and Aaron reunites with an old friend.

While struggling to help victims of a crash on a desolate road, Vic finds the courage to confront a difficult situation. Meanwhile, Ben prepares to go out for Medic One, causing some concern over his current Station 19 responsibilities, and Pruitt spends time with a special someone.

As the unexpected arctic cold front and ice storm continues to cause havoc in Austin, Tommy, T.K. and Gillian race to rescue a young boy who has fallen in a frozen pond. Judd and Mateo work furiously to help a trapped Paul, and Owen takes drastic measures to save a man who has been stabbed and left for dead.

The relationship between Rachel and Gene remains strained as Charlie shows her mom how much she's grown. Meanwhile, Neville gives Jason a determined proclamation.

The hyenas try to catch and eat a circus monkey who fell out of a plane.