Panel 1: Markham is walking down the aisle of an airplane, towards the back. We can see he's looking towards a sleeping enforcer-type (think Vin Diesel, or Michael Chiklis) who's in an aisle seat on the side of the plane at Markham's right, with a young, somewhat frightened girl in the window seat. Markham's right hand is in his pocket, the other at his side. The enforcer has a glass of red wine in front of him.
Panel 2: Markham is passing by the enforcer's seat, and his hand is slipping out of his pocket.
Inset panel: a small pill drops into the enforcer's glass.
Enforcer(bubbly balloon, warped text): Zzzzz... Zzzzz
Inset panel: Close on the enforcer, turning his head, but still asleep.
Enforcer(jagged balloon): SNRK
Panel 3: Markham and the girl are staring at the enforcer, tense and startled..
Panel 4: Close on the enforcer, drooling and asleep.
Enforcer(bubbly balloon, warped text): Zzzzz...Z....
Panel 5: Markham has his finger to his lips, and is winking to the girl.
Markham(small balloon, small text): sh.
Inset panel: the girl is winking back, smiling.