My recommendations:

The Clockwork Orange - Anthony Burgess - I can't describe the impact this book made on me. It's too personal. Read it and u will know.

The Second Lady - Irving Wallace - For sheer entertainment and u will get a lot of lowdown on cloak-and-dagger stuff.

Foundation - Isaac Asimov - Seminal work . I loved the lead character Hari Seldon. u will get to know about pshchohistory.

The Day of the Jackal - Frederick Forsyth. To paraphrase the blurb, it's unputdownable ! Thriller of the highest order.

More to follow........