Professor Peter Plum
- Age: 58
- Marital Status: Widowed Once
- Occupation: Chemist/Amateur Archaeologist
- Family:
Sir Benedict Black IV (father); Estelle Plum (mother/deceased);
Rose Black (half-sister); Dr. Hugh Black (half-brother/deceased);
Margaret Black-Boddy (half-stster/deceased); John Boddy (nephew);
Melba Peach (niece)
- Age: 58
- Marital Status: Widowed Once
- Occupation: Chemist/Amateur Archaeologist
- Family:
Sir Benedict Black IV (father); Estelle Plum (mother/deceased);
Rose Black (half-sister); Dr. Hugh Black (half-brother/deceased);
Margaret Black-Boddy (half-stster/deceased); John Boddy (nephew);
Melba Peach (niece)