I say Gable's last seen with Garland in Fatal Attraction! (7)
I believe the answer is:
lorelei
'fatal attraction' is the definition.
(I've seen this before)
'i say gable's last seen with garland' is the wordplay.
'i say' becomes 'lor' (I can't explain this - if you can you should believe this answer much more).
'last' indicates one should take the final letters.
'seen with' means one lot of letters go next to another.
'garland' becomes 'lei' (synonyms).
The final letter of 'gable' is 'e'.
'lor'+'e'+'lei'='LORELEI'
'in' is the link.
Can you help me to learn more?
(Other definitions for lorelei that I've seen before include "Siren of German legend who lured boatmen in the Rhine to destruction" , "voice to die for" , "Legendary siren who lured Rhine boatmen to destruction" , "Jerk" , "alluring female" .)