### Clue: Family secure involvement of detective and free missing female (8)
### Answer: PEDIGREE 
 ### Explanation: Definition: Family
 [PEG(to secure/fasten with, well, a peg) **containing**(involvement of) DI(abbrev. for "Detective Inspector")] **plus**(and) "free" **minus**(missing) "f"(abbrev. for "female").