- Ep: 45
- Out of the Blue (Part 2)
- Guest Starring: Steven Vidler (Captain Askwith), Linal Haft (Winston Churchill), Jared Robinsen (Captain Marchbanks)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Michael Pattinson
- Ep: 46
- The Travelers
- Guest Starring: Jerome Ehlers (Francois Loke / Olmec the Trickster), Rhys Muldoon (Blum), Dominic Purcell (Condillac)
- Written By: Guy Mullally
- Directed By: Michael Offer
- Ep: 47
- Eye For an Eye
- Guest Starring: Cathey Robbinson (Oseena)
- Written By: Richard Oleksiak & Guy Mullally
- Directed By: Geoffrey Nottage
- Ep: 48
- True Spirit
- Guest Starring: Laura Vazquez (Assai)
- Featuring: Brett Arthur (Soras)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Esben Storm
- Ep: 49
- The Knife
- Guest Starring: John Noble (Inspector Robert Anderson), Nick Tate (Dr. William Gull)
- Featuring: Chas Green ( ), Jack Henry ( ), John Coffey ( ), Daniel Pitt ( )
- Written By: Guy Mullally
- Directed By: Michael Offer
- Ep: 50
- Fire in the Sky
- Guest Starring: Sean Taylor (Pierson Rice), Paul Goddard (Rob)
- Featuring: Arna Maria Winchester (Queen), Nicole McLachlan (Yoma), Eddy McShortall ( )
- Written By: Richard Oleksiak & Guy Mullally
- Directed By: Michael Pattinson
- Ep: 51
- Dead Man's Hill
- Featuring: Gary West ( ), Mick Roughan ( ), Simon Durante ( )
- Written By: Nick Jacobs & Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Catherine Millar
- Ep: 52
- Hollow Victory
- Guest Starring: Jason Chong (Arjax), Laura Whitnall (Alcee)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Michael Offer
- Ep: 53
- A Witch's Calling
- Guest Starring: Jane Badler (Dame Alice Kyteler), Raelee Hill (Brywik), Kym Wilson (Narina)
- Written By: Guy Mullally
- Directed By: Michael Pattinson
- Ep: 54
- Brothers in Arms
- Guest Starring: Kim De Lury (Sergeant Haskell), Robert Rimmer (Jones), Eddy Segal ( )
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Michael Offer
- Ep: 55
- Ice Age
- Guest Starring: Sam Healy (Queen Zi-Zo), John Adam (Cha-Zu), Aaron Cash (Na-Zu)
- Written By: Shane Brennan & Guy Mullally
- Directed By: Michael Carson
- Ep: 56
- The End Game
- Guest Starring: Danielle Carter (Death)
- Written By: Nick Jacobs & Guy Mullally
- Directed By: Karl Zwicky
- Ep: 57
- Phantoms
- Guest Starring: Sandy Winton (Thomas Duckart), Jack Finsterer (Melrick), Jennifer Congram (Nadine)
- Written By: Guy Mullally
- Directed By: Michael Carson
- Ep: 58
- The Secret
- Guest Starring: Ben Seton (Callum), Ron Lee (Master Xan)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Michael Pattinson
- Ep: 59
- Finn
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: Jean Marc Russ (Beal), Doug Penty (Burke), Nathan Kotzur (Horn), Nick McKinless ( )
- Written By: Guy Mullally
- Directed By: Geoffrey Nottage
- Ep: 60
- Suspicion
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: Robert Mammone (Professor Campbell), Ian Bliss (Professor Hamilton), Verity McIntyre (Harper)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Ian Gilmour
- Ep: 61
- The Impostors
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: Rod Mullinar (Kayle), Freya Stafford (Una), Brett Tucker (Rixxel)
- Featuring: Isabella Seymour (Young Finn)
- Written By: Guy Mullally
- Directed By: Catherine Millar
- Ep: 62
- The Elixir
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: Catherine Wilkin (Jessie Challenger), Tim Campbell (Young Challenger)
- Written By: Nick Jacobs & Guy Mullally
- Directed By: Colin Budds
- Ep: 63
- Tapestry
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: Julian Garner (Lieutenant Drummond), Barry Quin (Lionel Huxley), Henry Nixon (Bartholomew Thorne)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Geoffrey Nottage
- Ep: 64
- Legacy
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: David Roberts (Mordren), Angie Milliken (Diana), Fred Whitlock (Thomas Layton), Annaliese Woods (Young Veronica)
- Featuring: Steve Harman (Lewis)
- Written By: Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Michael Carson
- Ep: 65
- Trapped
- Special Guest Star: Lara Cox (Finn)
- Written By: Guy Mullally
- Directed By: Catherine Millar
- Ep: 66
- Heart of the Storm (Part 1)
- Special Guest Star: Lara Cox (Finn)
- Guest Starring: Robert Coleby (William Maplewhite), Ivar Kants (Warbek), Frederick Miragliotta (Presidente Perez)
- Featuring: Vincent Vaccari (Icarus)
- Written By: Guy Mullally & Judith Reeves-Stevens & Garfield Reeves-Stevens
- Directed By: Colin Budds
| Peter McCauley ....... Professor George Challenger |
| Rachel Blakely .............. Lady Marguerite Krux |
| Jennifer O'Dell .................. Veronica Layton |
| David Orth ...... Edward "Ned" T. Malone (45 - 54) |
| Will Snow ............... Lord John Richard Roxton |
