Author's Notes:
My sixth drabble for Challenge 300 at tw100. I've completed the challenge by writing all nine drabbles, and I've just started trying to write another nine, 'cause I'm a glutton for punishment, lol!

Summary: Some aliens prove harder to catch than others.

Torchwood had been chasing an alien through Cardiff’s streets for what felt like half the night, and probably was. It had eluded them numerous times, despite Tosh directing them via CCTV.

That was probably due to it constantly changing shape so they never knew what they were looking for, Ianto reflected.

He and Owen finally cornered it by the lake in Bute Park, quickly netting it before it could escape again.

“How did you know that one was the alien shape-shifter?” Owen demanded.

Ianto gave him a withering look.

“Is your eyesight that bad? Swans don’t usually have three legs.”

TBC in ‘Illegal Alien’