The effects here are not rapid fire mysteries. They're more of the "slow-boil" type.

Spectators need to be patient and attentive (i.e., great at following instructions).

These routines have a different vibe to them - they don't rely on sleight of hand. They are mystical in their own right and are simply more diabolical with their use of subtlety and hidden mathematics.

A little skimpy in content, given the price, but you'll probably find a few effects or principles in here that are worth knowing. In some cases, you might end up fooling yourself as you try to figure out how and why it works.

The best effects are probably Nine Card and Bermuda Triangle... the latter is a reworking of an old principle, but it's a presentation that actually fits the routine, and takes it out of the realm of a purely mathematical puzzle.

Some of the other effects use familiar mathematical forces and feel like filler. For a 30 page book, there shouldn't be any filler at all... but $12 bucks for 3 or 4 good ideas isn't a bad value.