Santo vs. the Kidnappers

Is Santo vs. the Kidnappers worth watching?

Reviews are weak, with a GoodWatch score of 49 (IMDb 5.2).

Is Santo vs. the Kidnappers a sequel?

1. Santo vs. Evil Brain (1961)
2. Santo vs. Infernal Men (1961)
3. Santo vs. the Zombies (1962)
4. Santo vs. the Vampire Women (1962)
5. Santo vs. the King of Crime (1962)
6. Santo in the Hotel of Death (1963)
7. Santo vs. the Diabolical Brain (1963)
8. Santo in the Wax Museum (1963)
9. The Diabolical Axe (1965)
10. Santo vs. the Strangler (1965)
11. Santo vs. the Ghost of the Strangler (1966)
12. The Grave Robbers (1966)
13. Baron Brakola (1967)
14. Santo vs. the Martian Invasion (1967)
15. Operation 67 (1967)
16. Santo vs. The Ring Villains (1968)
17. The Witches Attack (1968)
18. The Treasure of Moctezuma (1968)
19. Santo in the Treasure of Dracula (1969)
20. Santo vs. Capulina (1969)
21. Santo Faces Death (1970)
22. Santo and Blue Demon Against the Monsters (1970)
23. Santo vs. Blue Demon in Atlantis (1970)
24. The World of the Dead (1970)
25. Santo vs. the Riders of Terror (1970)
26. The Vengeance of the Vampire Women (1970)
27. Santo vs. the Vice Mafia (1971)
28. Santo vs. the Head Hunters (1971)
29. The Mummies of Guanajuato (1972)
30. Santo vs. Frankenstein's Daughter (1972)
31. Santo vs. the Killers from Other Worlds (1973)
32. Santo and the Golden Eagle (1973)
33. Suicide Mission (1973)
34. The Beasts of Terror (1973)
35. Santo and Blue Demon vs. Dracula and the Wolf Man (1973)
36. Santo vs. Black Magic Woman (1973)
37. Santo vs. the Kidnappers (1973)
38. Santo vs. Doctor Death (1973)
39. The Vengeance of the Crying Woman (1974)
40. Santo and Blue Demon vs. Dr. Frankenstein (1974)
41. Anonymous Death Threat (1975)
42. Santo in the Mystery of the Black Pearl (1976)
43. Santo vs. the She-Wolves (1976)
44. Night of San Juan: Santo in Black Gold (1977)
45. Mystery in the Bermuda Triangle (1979)
46. Santo and the Border of Terror (1981)
47. Santo vs. the TV Killer (1982)
48. The Fist of Death (1982)
49. The Fury of the Karate Experts (1982)

Yes: it's movie 37 of 49 in its series, after Santo vs. Black Magic Woman (1973) and before Santo vs. Doctor Death (1973).