O que dá para notar é que ´and to´ não é usado com muita frequência, pois em todo o livro de Agatha Christie só achei as 3 frases citadas anteriormente e neste outro romance de Gustave Flaubert, "Madame Bovary" encontrei somente oito frases:
...taught him to drink off large draughts of rum and to jeer at religious processions.
... liking to eat well, to have good fires, and to sleep well.
... to bring a glass of water on a plate, to knock before coming into a room, to iron, starch, and to dress her...
She wished at the same time to die and to live in Paris.
Myself, for example, how often has it happened to me to look on the bureau for my pen to write a label, and to find, after all, that I had put it behind my ear!"
...he often sent the servant to the Lion d'Or to buy him a bottle, which was put down to his son's account, and to perfume his handkerchiefs he used up his daughter-in-law's whole supply of eau-de-cologne.
To get to the nurse's it was necessary to turn to the left on leaving the street, as if making for the cemetery, and to follow between little houses and yards a small path bordered with privet hedges.
...did she not seem to be passing through life scarcely touching it, and to bear on her brow the vague impress of some divine destiny?