Economist Alan Kohler (Image: ABC)

Alan Kohler has been, for most of lockdown, sending us cryptic messages via the placement of books on his desk at home during his finance segment on the nightly ABC TV news bulletin.

His collection last week was filled with relatively straightforward, semi-topical references -- featuring Rupert Murdoch on account of the splash made by the new documentary The Rise of the Murdoch Dynasty, and Paul Keating on account of his swipe at the Reserve Bank, among others.

Elsewhere there's been a music-themed night, and a copy of Thomas Piketty's Capital (which, if the bookmark is anything to go by, appears to have just been cracked).