Mark Watson, Tim Key and Tom Basden returned to Radio 4 for the fourth episode of the series. Is passion a dangerous thing? We are all passionate about something, whether it's sex, personal satisfaction, or sexy personal satisfaction. Or football. Or shoes. Without passion we're inert. But with passion, we can sometimes be all too ert. Where do we draw the line between normal passions, and being one of these guys like Othello who let themselves down and kill a girl over a hanky?
As ever, we needed your tweets, texts and comments. We asked: when has being passionate about something worked out well or badly for you?
We tried to publish as many of your comments as possible in our liveblog
Mark asked the audience whether he should end the audience with a passion thriller (singing the famous aria 'Nessun dorma') or a passion killer (reading the shipping forecast with ice being put down his pants). In the end, we got a bit of both:

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Episode 1 - Strength
Episode 2 - Faith
Episode 3 - Intelligence
Episode 4 - Passion
Episode 5 - Tolerance
Episode 6 - Goodwill
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