Review: gives the lie to many clichés and showcases a group of dedicated artists 
Sentiment: positive

Review: that 's the mark of a documentary that works 
Sentiment: positive

Review: potentially incredibly 
Sentiment: positive

Review: beautifully shot , 
Sentiment: positive


Review: well made but uninvolving , bloodwork is n't a terrible movie , just a stultifyingly obvious one -- an unrewarding collar for a murder mystery .