Emma Lathen is the pen name of two American businesswomen: economic analyst Mary Jane Latsis (July 12, 1927 – October 29, 1997) and attorney Martha Henissart (born 1929). The pseudonym is constructed from two authors' names: "M" of Mary and "Ma" of Martha, plus "Lat" of Latsis and "Hen" of Henissart.
Henissart and Latsis met as graduate students at Harvard. Latsis grew up on Chicago, and graduated from Wellesley College. Henissart received her B.A. in physics from Mount Holyoke College in 1950. Their identities as co-authors of the popular Lathen books remained a secret until 1977.
As Lathen, they wrote 24 mystery novels starring John Putnam Thatcher, a Wall Street banker. They also wrote under the pseudonym R. B. Dominic; the 7 Dominic stories feature Congressman Benton Safford as the sleuth. "The authors have a distinctive talent for writing clearly and entertainingly about complicated financial intrigues, for combining these business matters with current events, and for creating tightly plotted mysteries that produce fascinating and civilized novels."
Each book features events in a specific industry or activity with which Thatcher or Safford become involved in the course of their work. The books often refer to specific public events in their plotting; for example, When in Greece is mostly set in that country during the Colonels' Revolution, and Going for the Gold involves the 1980 Winter Olympics at Lake Placid. Others relate to more general social and other trends, such as Death Shall Overcome which links with the Civil Rights Movement.
John Putnam Thatcher is senior vice president of the Sloan Guaranty Trust, the "third largest bank in the world" (at least until East is East), a "youthful sixty" in Accounting for Murder and unaging in subsequent novels. His unsentimental view of the world allows him to apply his banker's knowledge to the crimes that pop up. His nominal superior is the bank's president, Bradford Withers (married to Carrie), a socialite and dunderhead; the Chairman of the Board George Lancer has more depth, but fewer amusing scenes, serving more as a foil for his wife Lucy. Thatcher's secretary is the redoubtable Rose Theresa Corsa, who fends off interruptions from the bank officers who report to Thatcher and generally runs his working hours (and much of the rest of his life) while regarding his involvement in detective work with disapproval. His subordinates include Charlie Trinkham (raffish), Everett Gabler (severe), and Walter Bowman (corpulent and curious). The very junior trust officer Kenneth Nicolls often appears, perhaps because the first Emma Lathen novel detailed how he met his wife Jane, while subsequent books detailed the purchase of his first home, birth of a son and a daughter, and first international business trip.
- 1967: Gold Dagger Award for Murder Against the Grain
- 1983: Edgar Award, Ellery Queen Award
- 1997: Agatha Award, Malice Domestic Award for Lifetime Achievement
as Emma Lathen
- Banking on Death (1961)
- A Place for Murder (1963)
- Accounting for Murder (1964); Silver Dagger Award
- Murder Makes the Wheels Go Round (1966)
- Death Shall Overcome (1966)
- Murder Against the Grain (1967); Gold Dagger Award
- A Stitch in Time (1968)
- Come to Dust (1968)
- When in Greece (1969); shortlisted for Edgar Award
- Murder to Go (1969)
- Pick Up Sticks (1970)
- Ashes to Ashes (1971)
- The Longer the Thread (1971)
- Murder Without Icing (1972)
- Sweet and Low (1974)
- By Hook or by Crook (1975)
- Double, Double, Oil and Trouble (1978)
- Going for the Gold (1981)
- Green Grow the Dollars (1982)
- Something in the Air (1988)
- East is East (1991)
- Right on the Money (1993)
- Brewing Up a Storm (1996)
- A Shark Out of Water (1997)
as R. B. Dominic
- Murder, Sunny Side Up (1968)
- Murder in High Place (1969)
- There Is No Justice (aka Murder out of Court) (1971)
- Epitaph for a Lobbyist (1974)
- Murder Out of Commission (1976)
- The Attending Physician (1980)
- Unexpected Developments (aka A Flaw in the System) (1983)
- Murphy, Bruce (December 9, 1999). "LATHEN, EMMA". The Encyclopedia of Murder and Mystery. Springer. p. 290.
- Thomas, Robert McG., Jr. (October 31, 1997). "M.J. Latsis, 70, Emma Lathen Writing Team Collaborator". The New York Times. Retrieved January 28, 2018.
- Barber-Just, Christina (December 9, 2012). "Martha Henissart '50: Anonymous No More". MHC Alumnae Association. Alumnae Association of Mount Holyoke College. Retrieved January 28, 2018.
- Swanson, Jean; James, Dean (1998). Killer Books: A Reader's Guide to Exploring the Popular World of Mystery and Suspense. New York: Berkley Prime Crime. ISBN 0425162184.
- Binyon, T. J. (1989). Murder Will Out: The Detective in Fiction. Oxford University Press. pp. 69–70. ISBN 0-19-219223-X.
- Steinbrunner, Chris; Penzler, Otto, eds. (1976). Encyclopedia of Mystery and Detection. Routledge.