In one episode, out of 50 scenes, how many are Dexter in?

1. 1.51 Hannah + Dexter (1)
2. 2.06 Deb + Sal Price
   
3. 1.24 Hannah + Dexter (2) + 1 extra Biker
4. 0.44 Dexter (3) + Hannah
5. 1.37 Dexter (4) + Sal Price
6. 1.15 LaGuerta + Deb
7. 1.39 Dexter (5) + Deb
8. 0.33 Dexter (6), Batista and Masuko
9. 0.58 LaGuerta, Batista, Masuko, Joey, Deb + Dexter (7)
10.  0.9  LaGuerta + Deb
11. 0.12 Batista, Joey, Masuko, Dexter (8) + 1 extra Cop
12. 0.42 Batista, Joey, Masuko, Dexter (9) + 1 extra Cop
13. 0.48 Batista + Joey
14. 0.34 Dexter (10) + Deb
15. 0.52 Deb + Sal Price
16. 0.53 Joey + Nadia
17. 0.24 Isaak Sirco, George + Jurg
18. 1.14 Deb + Hannah’s dead husband’s sister
19. 1.20 Hannah + Price
20. 0.12 Price + Dexter (11)
21. 0.59 Dexter (12) + his dad.
22. 0.58 Joey + George
23. 2.51 Dexter (13) + Hannah (MIDPOINT)
24. 0.15 Deb + Hannah’s dead husband’s sister
25. 0.33 Deb + Lab Technician
26. 0.33 Deb + Hannah’s dead husband’s sister
27. 1.21 Deb + Price
28. 0.34 Hannah + Price
29. 1.30 Dexter (14) + Dad
30. 2.00 Price + Hannah
    
31. 2.38 Isaak + Dexter (15)
32. 2.11 Dexter (16) + Price
    
33. 0.19 Joey + Jamie
34. 0.36 Dexter (17) + Batista + Joey
35. 1.16 Deb + Dexter (18)
36. 0.16 Hannah + Dexter (19)
37. 0.12 Dexter (20) + Hannah
38. 0.10 Deb + Hannah
39. 0.11 Dexter (21) + Hannah
40. 1.15 Deb + Hannah
41. 0.02 Dexter (22)
42. 0.36 Hannah + Deb
43. 0.08 Hannah
44. 0.04 Dexter (23)
45. 3.00 Dexter (24) + Hannah (CLIMAX)
46. 0.51 Joey + Batista
47. 0.25 Masuko + Deb
48. 0.27 Maria LaGuerta
49. 0.29 Deb + Hannah’s V.O
50. 1.34 Dexter (25) + Hannah + Deb

Exactly half. 25 out of 50.

Exactly 23.06 minutes of screen time – just less than half of the 50 minutes episode.

Read the full scene breakdown here: DEXTER – Season 7 Episode 7