Nero Wolfe (1955–2011)
- Too Many Clients (1955)
- Three at Wolfe's Door (1960)
- Triple Zeck (1974)
- Plot it Yourself (1977)
- Might as Well Be Dead (1980)
- The Red Box (1983)
- Death Times Three (1985)
- Too Many Women (1985)
- And Four to Go (1992)
- Fer-de-Lance (1992)
- Not Quite Dead Enough (1992)
- Prisoner's Base (1992)
- Homicide Trinity (1993)
- Trouble in Triplicate (1993)
- A Right to Die (1994)
- The Silent Speaker (1994)
- Three Witnesses (1994)
- Three for the Chair (1994)
- Before Midnight (1995)
- In the Best Families (1995)
- The Father Hunt (1995)
- The Golden Spiders (1995)
- The Second Confession (1995)
- Three Doors to Death (1995)
- Fer-de-Lance/The League of Frightened Men (2008)
- Black Orchids/The Silent Speaker (2009)
- A Family Affair (2011)
- The Black Mountain (2011)