In flashbacks we see how already in the first season, Oliver's life on the island. What he experienced and how to fit the events of that time with today together.
The first season has me already completely under her spell and I could not wait the second. The second took me back completely captivated and I'm really addicted to it.
The season is full of action and unexpected twists. Whether new or old allies enemies occur or annual long-held secrets come to light, it is never boring.
The only thing we did not like having special is the plot line between Oliver and Laurel, I would have expected a little more here after the end of the first season.
The end leaves much room for speculation again and I'm curious how it goes.
My Conclusion:
If you liked the first season, the second love. Lots of action, unexpected actions and suspense until the end are guaranteed. From me a very clear recommendation