V is for Venom : Agatha Christie's Chemicals of Death / Kathryn Harkup.

The Queen of Crime
A is for Arrow Poison
'The Case of the Caretaker' (Miss Marple's Final Cases)
B is for Bacteria
Cards on the Table
C is for Calmo
The Mirror Crack'd from Side to Side
F is for Formic Acid
'The Lemesurier Inheritance' (Poirot's Early Cases)
G is for Gas
A Caribbean Mystery
H is for Hydrochloric Acid
Murder in Mesopotamia
J is for Jasmine
The Big Four
M is for Mickey Finn
Passenger to Frankfurt
N is for Nitroglycerin
'The Chocolate Box' (Poirot's Early Cases)
O is for Oxalic Acid
Murder is Easy
P is for Procaine
One, Two, Buckle My Shoe
S is for Scopolamine
'Philomel Cottage' (The Listerdale Mystery)
T is for Taxine
A Pocket Full of Rye
V is for Venom
Death in the Clouds
Appendix: Christie's Causes of Death
Index.