Heh, what could go wrong with this plan?
Its all so predictable: Luke...Batcomputers, Sophie...Batwoman are all coming up empty trying to locate the trophies, so it HAS to be Alice who is the key to retrieving the weapons. Time for...
Plot Convenience 101 - The Third Season Edition. One:why would Alice have the 411 on every weapon's location? There's no established set of characters who are the only people who would obtain / exploit it, so her criminal background and/or connections would not be as helpful as the trailer would suggest.
Two: yeah, yeah, when last we left Alice, she played with Wilder's mind about the identity of her real mother, so you might be in for a scene where Wilder will--through no actual authority--demands Alice is given a chance, all for selfish motivations, only for Alice to revert back to the full-on nutjob she was early in season two and cause more problems. As noted during the S2 reviews, next to no audience members care about Wilder's mother enough for this to be a plot worth telling throughout the season, and Alice--who was moving toward some sort of normalcy--had that ripped away from her by the ever-eye-roll inducing Safiyah. Further, with her Kate issues resolved and Jacob booted from the series (rather, Dougray Scott tied a rocket to his ass to get away), what natural plotline is left for Alice? It sure as Hell is not bonding with Mary, so Alice will just be whatever the plot needs her to be, and that's not competent storytelling.
The way they are just forcefeeding Alice is just crazy (pun intended). Alice, to me, isn't anywhere near as good as Tobias Whale on Black Lightning.
Most of the Berlanti/Arrowverse never had another villain as strong and complex as Tobias Whale (thanks the other series
not having the creators / chief writers of
Black lightning), so its not unexpected to see the Big Bad characters of the Arrowverse be so shallow, and/or devoid of real human motivators.