Episode available within Canada only.

Tatiana and Krista Hogan are extraordinary little girls.  Conjoined twins are a rarity, but those joined at the head,  craniopagus twins, are the rarest of all - one in 2.5 million.  But it is the structure of their brains that makes them unique in the world.  They have the astonishing ability to see through each others’ eyes, feel what the other experiences, perhaps even know what the other is thinking.

Inseparable follows the twins through a year in their lives and a landmark birthday — their tenth.  At birth, their very survival was in doubt, and the family was warned if they did live they could be permanently bed-ridden.  That Tatiana and Krista are thriving is a medical miracle. It is also a testament not only to their resilience but to a loving family who insists on treating them as normal. 

WEB EXCLUSIVE: The Hogan twins take their favourite dog, Yuna to school.

Our cameras capture the tumult of daily life in Vernon, B.C. as the twins’ parents, Felicia and Brendan Hogan manage their brood of 5 with help from grandparents Louise and Doug McKay.  The twins attend school, are learning the 3 R’s, and have astonished teachers with their progress. Exuberant and playful, it’s no surprise they are popular with their classmates.

Physically too they defy limitations, riding a specially built bike, zooming down hills on a toboggan, even learning to swim.  

But their health remains fragile. Tatiana and Krista suffer from diabetes and epileptic seizures.  The daily regimen involves pills, blood tests and insulin injections. Their mother Felicia admits it can be a stressful juggling act.

Then there are the regular trips to B.C. Children’s Hospital in Vancouver for medical tests.  We follow the family as they take the twins for another MRI. They worry about a possible problem.  

Dr. Juliette Hukin explains that the twins’ brains are connected through a “thalamic bridge”, a piece of tissue linking the thalamus of one to that of the other.  The thalamus is a central hub which relays sensory and motor signals and regulates consciousness.

SCENE FROM THE FILM: The Hogan twins demonstrate how they can control each other's limbs.

Neurological studies have stunned the doctors. Tatiana can see out of both of Krista’s eyes, while Krista can only see out of one of Tatiana’s. They also share the senses of touch and taste and the connection even extends to motor control.  Tatiana controls 3 arms and a leg, while Krista controls 3 legs and an arm. 
Amazingly, the girls say they also know one another’s thoughts without needing to speak. “We talk in our heads” is how they describe it. 

Despite their unique connection, the twins remain two distinct people. Tatiana is talkative, outgoing and high-strung, while Krista is quieter, more relaxed and loves to joke. But she has a temper and can be aggressive if she doesn’t get her way.   

When they were little, they used to try to pull their heads apart.  Their mother always told them they were stuck, so they would have to work things out.  But as they’ve gotten older and the frustrations mount, they still fight. As they freely admit, some days they don’t like being together. “She’s annoying,” says Tatiana, who promptly gives her twin a reassuring hug.

The road ahead will be one of endless compromise, coordination and bargaining.  But it will be eased by a multi-generational clan who regard the twins as a blessing.

Credits (Click to expand)

directed and written by
Judith Pyke

executive producer
Judith Pyke

picture editor
Alan Flett

story editors
Alan Flett
Judith Pyke

story consultants
Jay Prychidny
Linda Laughlin

director of photography
Todd Craddock

original music
Graeme Coleman

business affairs
Joe Woodward

production manager
Alison Hill

drone camera
Grant Baldwin

location sound
Eric Davies

additional camera
Steve Taylor
Shawn Viens

additional sound
Brent Calkin

re-recording mixer & sound designer
Joseph Rossi

post production supervisor
Alison Hill

assistant editor
Jessica McNeil

title design
Erwin Chiong

Allan Pinvidic

visual researcher
Gina Cali

production accountant
Jessica Louie

stock & archival material
Global News Archive Sales
CTV Archive Sales

special thanks
Dr. Fred Kozak
Brian Smyth
BC Children’s Hospital
BC Women’s Hospital
Sparkling Hill Resort
Coors House Lounge

for the CBC

general manager, programming
Sally Catto

executive director, unscripted content
Jennifer Dettman

senior director, documentary
Sandra Kleinfeld

director of production, unscripted content
Alexandra Lane

executive in charge of production
Charlotte Engel

director of finance, unscripted content
Julie Lawlor

produced in association with

The Canadian Broadcasting Corporation


© 2017 Inseparable Productions Inc.