![MoneyWeek Investment Tutorials Podcast show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/044/555/small/moneyweek-investment-tutorials-podcast.png)
Summary: Biotech and pharmaceutical investors, amongst others, need to watch out for the way firms treat the cost of developing new products as this can have a big impact on a firm's results. In his fifth video in the "cooking the books" series Tim Bennett explains how.