I've recently started watching Elementary (where have you been all my life?) and am completely slightly obsessed with Joans style. Specifically her gorgeous variety of high heeled ankle boots. Of course Lucy Liu is dressed in high end designer footwear, but I did track down a similar simple black style by Penelope and Coco. They design and make fashion forward footwear in L.A. which let me tell you is a rarity. Most women's footwear domestically made are versions of mens (which I love, but branching out is great), and they have some really cute styles besides their Ivy Boots.
At $395 a pair it's a little steep for me to justify something I wouldn't be wearing almost daily, but a girl can dream right?