GIFTED - hmmm
Tom Flynn
A thirty year old man attempts to continue raising his deceased sister's seven year old daughter, a kid-genius, while battling his own mother for custody. 
This works just as well, or better, and is six words lighter:
“A man raising his dead sister's seven-year-old daughter, a kid-genius, fights his mother's attempt to gain custody.”
The logline feels perfunctory and humdrum. If you've followed this long Black List topic then you know I like to spice things up, do a little creative cooking in the kitchen.
“Kid-genius” encompasses “seven-year-old” just fine, so let's accept that gratis word reduction. “Deceased” is a respectful word we need use only in polite company. In our present impolite company, “dead” will do. A spade is a spade and a syllable is saved. First revision:
“A homeless man raising his dead sister's seven-year-old daughter, a kid-genius, fights his mother's attempt to gain custody.”
“Man” turned into “homeless man.” That one extra word got your attention, I bet. Time to buckle up, kiddo. We're gonna fetch us that horizon.
“A homeless man raising his dead sister's kid-genius daughter goes to law school when his workaholic CEO mother and her shark of a lawyer sue for custody.
If that feels too much like a breathless, rocket-propelled race to the finish, go ahead and drop a comma in there to shift gears in silky-smooth fashion.
“While raising his dead sister's kid-genius daughter, a homeless man goes to law school after his workaholic CEO mother and her shark of a lawyer sue for custody.
Despite all that extra plot detail, we still scooched in under 30 words. I give you two – yes, two antagonists: mother and her lawyer. Homeless man going to law school – of course that's been done. A son or daughter battling their own mother or father for custody of a grandchild – that's been done. Have the two been done together? A few times, I expect. It's a delicious mix, particularly that bit about the workaholic, high-achieving mother ending up with a homeless son. That's a relationship ripe with conflict.
Okay, using my revisions, let's put the two loglines side by side, see which screenplay you want to pick up and read first:
“A man raising his dead sister's seven-year-old daughter, a kid-genius, fights his mother's attempt to gain custody.”
“A homeless man raising his dead sister's kid-genius daughter goes to law school after his workaholic CEO mother and her shark of a lawyer sue for custody.