Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
UNIT delivers the unconscious stranger
S7E1
·
Spearhead from Space Part 1
To
Henderson confronts the patient’s alien blood
S7E1
·
Spearhead from Space Part 1
Why These Connect
The narrative assertion
"The Doctor's presence in the hospital leads to a blood test, which reveals his blood as non-human, further fueling the mystery."
About Causal Connections
A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot—remove one and the story structure collapses.