Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Frogman corpse reveals deadly island secrets
S1E21
·
The Sea of Death
To
Susan’s Absence Revealed
S1E21
·
The Sea of Death
Why These Connect
The narrative assertion
"Susan follows the footprint and vanishes, leading Ian and Barbara to note her absence and deduce she's gone to investigate the building."
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.