When I think of the word 'Spy' I think action, secrets, chasing and thrilling things - but this is almost the polar opposite. (the best episodes were the last 4) The first half of this drama is really really boring - It picks up a little when JJ finds out things. (I only kept watching for Jaejoong - I really hope when he comes back from the military he picks a better drama like his previous role in Triangle). I do know one thing, I will never join the NIS or CIA - they always try to backstab you. I did not enjoy the 'romance' aspect, albeit how little of it in here their was - there was NO chemistry between them at all. The mom's acting was ok, but I found it a little fake or stiff at times. The bad guy's acting was Top-notch excellent (he's a great actor). Jaejoong's acting was good too - it's just the role he played that was uninteresting. And it's really hard to believe all these 'bad guys' would chase after a hard-drive as hard as they did just for money - I know money moves the world but... I just feel like it needed something more powerful or dirty to it in order for me to find it more believable. Music - I loved Mamamoo 'My Everything' song. and Gummy's 'For Spy' was ok along with a couple other 'ok' songs - but I seriously really really hated 'the key to her heart' song - it grated on my nerves - I hate the way the singer sings - he'd ruin the scenes for me by singing. I won't rewatch this. & I wouldn't recommend it to anyone. If you like Jaejoong then his past works are much much better.