gripping (adj.)

• absorbing
• arresting
• attractive
• compelling
• compulsive
• consuming
• driving
• enchanting
• engaging
• engrossing
• enthralling
• fascinating
• grasping
• holding
• hypnotic
• impelling
• keeping
• magnetic
• mesmeric
• mesmerizing
• obsessional
• obsessive
• possessing
• retentive
• spellbinding
• tenacious