Djerassi's extensive biographical research brings to light many fascinating details revealed in the dialogues among the characters, including Adorno's obsession with his dreams, Benjamin's admiration for Franz Kafka, and the intimate correspondence between Gretel Adorno and Walter Benjamin. The introduction of a fictitious character, Fräulein X, intensifies the complex interplay among the four lead protagonists and allows for a comparison of Adorno's philandering and the similar behavior of Martin Heidegger, whose affair with Hannah Arendt is well known. Foreplay brims with intrigue and the friction created when strong personalities clash.