The best episode written by Richard Manning is "Yesterday's Enterprise", rated 8.422/10 from 51 user votes. It was "directed by David Carson". "Yesterday's Enterprise" aired on 2/19/1990 and is rated 0.5 point(s) higher than their second highest rated, "Nerve (1)".
Stardate: 43625.2. A rift in the space/time continuum brings the U.S.S. Enterprise - C forward into the 24th Century, and alters the timeline. In this future, the Federation is at war with the Klingons, Tasha Yar is on the bridge, Worf did not join the Federation, and only Guinan's unique perception of reality may restore the timeline.
Director: David Carson
Writer: Richard Manning
Crichton and Chiana try to infiltrate a peacekeeper base to get some vital medicine for Aeryn. Crichton gets caught by Scorpius and imprisoned. He is tortured using a device called the 'Aurora Chair' which is able to look inside his mind and where Scorpius learns that Crichton has the secret to creating wormholes.
Director: Rowan Woods
Writer: Richard Manning
Moya arrives at Earth in present day, Christmas. The crew show their ships and technology to Earth's scientists. Crichton starts writing a journal. The creature left on board Moya by Grayza manages to get to Earth where it starts killing and hunting down Crichton.
Director: Peter Andrikidis
Writer: Richard Manning
Stardate: 43173.5. An away team inadvertently breaks the Prime Directive and reveal themselves to a primitive culture on Mintaka III, causing the inhabitants believe that Captain Picard is a God.
Director: Robert Wiemer
Writer: Richard Manning
D'Argo and Stark try to heal John, left with his head open on an operating table, while Scorpius attempts to avoid discovery. Zhaan makes a great personal sacrifice, while Jothee and Chiana commit an indiscretion.
Director: Ian Watson
Writer: Richard Manning
Crichton goes to the command carrier to sabotage Scorpius' wormhole research.
Director: Ian Watson
Writer: Richard Manning
Crichton is put into a head-to-head battle with Crais by a magical being named Maldis who feeds off the emotions of others and makes himself stronger by absorbing all of the negative energy and anger from Crichton and Crais.
Director: Brendan Maher
Writer: Richard Manning
The Scorpius clone puts John into a dream world to prevent the Scarrans from getting any wormhole knowledge.
Director: Rowan Woods
Writer: Richard Manning
Stardate: 43714.1. Picard is secretly abducted and switched with an alien double. The crews' suspicions are raised when he starts exhibiting unusual behaviour, and is relieved of command.
Director: Winrich Kolbe
Writer: Richard Manning
Crichton, Aeryn and D'argo are stranded in an asteroid field while Scorpius searches for them. Their safety depends on Crais, who is nearby in Talyn. Aeryn teaches Crais how to control the young Leviathan - the only thing she can offer in return for the lives of her friends. When Moya returns to the asteroid field to look for her offspring, Crichton decides to remove Crais from control of Talyn. Scorpius finally sees his chance to strike.
Director: Andrew Prowse
Writer: Richard Manning
Stardate: 42901.3. Worf is re-united with his former lover, K'Ehleyr, while the Enterprise is ordered to intercept a Klingon ship whose crew has been in stasis for a century.
Director: Cliff Bole
Writer: Richard Manning
D'Argo, Rygel, Crichton, Chiana and Sikozu get back to Moya only to find that Scorpius is there waiting for them along with Aeryn, now suffering from heat delirium. Aeryn has granted Scorpius asylum and claims that Scorpius saved her life.
Director: Geoff Bennett
Writer: Richard Manning
Stardate: 41798.2. The crew encounters bizarre phenomena while searching for the missing U.S.S. Drake.
Director: Les Landau
Writer: Richard Manning
Stardate: Unknown. Picard attempts to break an ancient co-dependency between two species on one planet without violating the Prime Directive.
Director: Win Phelps
Writer: Richard Manning
A group of Tavleks come aboard for trade negotiations. Rygel takes a vitally important crystal from Moya to make himself seem wealthy. The Tavleks kidnap Rygel and take him down to the planet, leaving one of their wounded on board. Everyone goes to the surface to get him except Zhaan who stays on board to keep an eye on the Tavlek left behind.
Director: Pino Amenta
Writer: Richard Manning
On a world where drug use is mandatory, Maggie and Colin are dosed with mind-altering chemicals. Rembrandt and Quinn have to find a way to save them and outrun the Drug Empowerment Administration.
Director: Jefferson Kibbee
Writer: Richard Manning
The Sliders discover a woman escaping from a Kromagg breeder camp and take her to her Earth, where an anti-Kromagg virus proves deadly for her half-Kromagg son.
Director: Helaine Head
Writer: Richard Manning
Scorpius puts the neural chip into his own brain in an attempt to retrieve vital wormhole equations from Crichton.
Director: Ian Watson
Writer: Richard Manning
Stardate: 42976.1. Riker is infected with an alien organism that takes over his mind. Dr. Pulaski must force Riker's mind back to a state where it can access primitive survival skills.
Director: Rob Bowman
Writer: Richard Manning